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Isabella Mill
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Info Database Last Updated 08.04.2024 (Entity News entries: 72)
Type/Category of Info:
General Mining News
Info Source From:
Mining Reporter. Volume: 54 [LIV], Issue No. 7
Info Publication Date:
August 16, 1906
Info found on page:
170
Info Title:
Isabella Mill Work is Progressing Rapidly
Isabella.—Work is progressing rapidly on the company’s new mill on Bull hill. The plant is expected to be so nearly automatic that it will require but four men on each shift to operate all of its departments.
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Above Info was Last Updated on 24.02.2023 (21:23:59)
Above Info was First Seen 24.02.2023

Type/Category of Info:
General Mining News
Info Source From:
Mining Reporter. Volume: 54 [LIV], Issue No. 12
Info Publication Date:
September 20, 1906
Info found on page:
295
Info Title:
Isabella Mill Expected Ready in a Month
Isabella.—It is expected that the company’s cyanide mill will be ready to handle ore in about thirty days. It is estimated that the company has over $1,000,000 worth of milling ore available.
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Above Info was Last Updated on 26.02.2023 (20:32:34)
Above Info was First Seen 26.02.2023

Type/Category of Info:
General Mining News
Info Source From:
The Mining World. Volume: 25 [XXV], Issue No. 13
Info Publication Date:
September 29, 1906
Info found on page:
411
Info Title:
Isabella Mill to Install Big Crusher From Midland Sampler
Cripple Creek.—The Isabella company is installing the machinery for its new cyanide mill and the big crusher formerly in use at the Midland sampler is being hauled out to the plant.
graphic for visual presentation of text With the arrival of machinery from the east the mill will be pushed to completion, and it is believed will be in shape to commence treatment of ores from the company's properties on or about November 1.
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Above Info was Last Updated on 05.11.2023 (16:33:44)
Above Info was First Seen 05.11.2023

Type/Category of Info:
General Mining News
Info Source From:
Mining Reporter. Volume: 54 [LIV], Issue No. 22
Info Publication Date:
November 29, 1906
Info found on page:
551-552
Info Title:
Isabella Mill Running Smoothly
Isabella.—The company’s new mill, situated on Bull Hill, has been satisfactorily tested, and is now running smoothly. The dump ore is being treated at present, though later the mine ores will be handled.
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Above Info was Last Updated on 01.03.2023 (19:00:26)
Above Info was First Seen 01.03.2023

Type/Category of Info:
General Mining News
Info Source From:
The Mining World. Volume: 25 [XXV], Issue No. 22
Info Publication Date:
December 1, 1906
Info found on page:
673
Info Title:
Isabella Mill Running
Denver.—The Isabella mill on Bull hill has been started up to treat the low-grade ore on the dump and exposed in the mine. The mill has a capacity of 100 tons and is operated by electricity throughout.
graphic for visual presentation of text In general it is modeled after the latest improvements as worked out in the Homestake mines, Black Hills. George D. Kilbourn is manager.
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Above Info was Last Updated on 08.11.2023 (09:17:40)
Above Info was First Seen 08.11.2023

Type/Category of Info:
Special/Editorial Correspondence
Info Source From:
The Mining and Scientific Press. Volume: 94 [XCIV], Issue No. 1
Info Publication Date:
January 5, 1907
Info found on page:
6
Info Title:
Isabella Mill in Operation
Annual Review.
graphic for visual presentation of textNew Cyanide Mills.
graphic for visual presentation of textPopularity of Cyanidation.
graphic for visual presentation of text The erection of cyanide mills for the treatment of the low-grade oxidized ores of the district has been an important feature. The Isabella Gold Mining Co., on Bull hill, has erected a mill, which is now in operation for the treatment of their low-grade ores in the mine and on the dump.
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Above Info was Last Updated on 10.10.2021 (18:51:24)
Above Info was First Seen 18.05.2021

Type/Category of Info:
General Mining News
Info Source From:
The Mining World. Volume: 26 [XXVI], Issue No. 13
Info Publication Date:
March 30, 1907
Info found on page:
430
Info Title:
Isabella Mill is Again in Commission
Cripple Creek.—The Isabella mill is again in commission, running 75 to 100 tons of low grade dump rock daily that is said to yield fair profits.
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Above Info was Last Updated on 16.11.2023 (08:59:08)
Above Info was First Seen 16.11.2023

Type/Category of Info:
General Mining News
Info Source From:
The Mining World. Volume: 26 [XXVI], Issue No. 16
Info Publication Date:
April 20, 1907
Info found on page:
515
Info Title:
Isabella Mill Could Run for Years on Company Ore
Cripple Creek.—The Isabella Co. has enough ore in the mine to keep its cyanide mill running for many years.
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Above Info was Last Updated on 18.11.2023 (07:52:11)
Above Info was First Seen 18.11.2023

Type/Category of Info:
Special/Editorial Correspondence
Info Source From:
The Mining and Scientific Press. Volume: 94 [XCIV], Issue No. 17
Info Publication Date:
April 27, 1907
Info found on page:
526
Info Title:
Start of Building Isabella Mill Info
From the annual report of the manager, G. D. Kilborn, attached to a circular letter issued by the Isabella Mines Co. to its stockholders, it reads that the company last August began building a cyanide plant of a capacity of 150 tons per day to treat its low-grade ore.
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Above Info was Last Updated on 10.10.2021 (18:51:24)
Above Info was First Seen 24.05.2021

Type/Category of Info:
General Mining News
Info Source From:
The Mining World. Volume: 26 [XXVI], Issue No. 22
Info Publication Date:
June 1, 1907
Info found on page:
703
Info Title:
Isabella Mill Getting Great Results
Cripple Creek.—Of all the cyanide mills which have been erected in Cripple Creek during the past 2 or 3 years the Isabella is getting the best results.
graphic for visual presentation of text This plant is now treating about 2,250 tons a month; average grade $5 and $6, from which the company is making a handsome profit.
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Above Info was Last Updated on 23.11.2023 (08:29:21)
Above Info was First Seen 23.11.2023

Type/Category of Info:
General Mining News
Info Source From:
The Mining and Scientific Press. Volume: 94 [XCIV], Issue No. 26
Info Publication Date:
June 29, 1907
Info found on page:
805
Info Title:
Isabella Mill Financially Success
Cripple Creek, June 19. (Special Correspondence)—The Isabella mill, of which Geo. D. Kilbourn is the manager, is understood to be a success financially. This mill is handling some of the ore from the Isabella mine, but a majority from the dumps.
Above Info was Last Updated on 10.10.2021 (18:51:24)
Above Info was First Seen 25.05.2021

Type/Category of Info:
General Mining News
Info Source From:
The Western Investors Review. Volume: 14 [XIV], Issue No. 2
Info Publication Date:
July 1907
Info found on page:
12
Info Title:
Isabella Mill June 1907 Output
During June the Isabella plant processed 3,000 tons with an average value of $6.00 and a bullion value of $18,000.
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Above Info was Last Updated on 14.08.2023 (20:43:54)
Above Info was First Seen 14.08.2023

Type/Category of Info:
Article
Info Source From:
Mineral Resources of the United States. Volume: 23 [XXIII]
Info Publication Date:
August 1907
Info found on page:
238
Info Title:
Isabella Mill in 1906
The Isabella Mines Company erected a 300-ton cyanide mill during 1906 to treat the lower grade ores from their properties as well as from the dump, but the plant was only run experimentally in 1906.
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Above Info was Last Updated on 03.07.2022 (02:57:43)
Above Info was First Seen 10.05.2010

Type/Category of Info:
General Mining News
Info Source From:
The Mining World. Volume: 27 [XXVII], Issue No. 5
Info Publication Date:
August 3, 1907
Info found on page:
204
Info Title:
Isabella Mill Treats 100 Tons Daily
Denver.—The Isabella mill is averaging about 100 tons of ore daily containing $4 per ton. This product is chiefly dump stuff.
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Above Info was Last Updated on 28.11.2023 (15:05:33)
Above Info was First Seen 25.11.2010

Type/Category of Info:
General Mining News
Info Source From:
Mining Reporter. Volume: 56 [LVI], Issue No. 6
Info Publication Date:
August 8, 1907
Info found on page:
131
Info Title:
Isabella Mill July Output
The July output of the Isabella mill was 3,100 tons with an average value of $6.00 for a total value of $18,600.00.
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Above Info was Last Updated on 20.07.2022 (09:16:34)
Above Info was First Seen 20.07.2022

Type/Category of Info:
General Mining News
Info Source From:
Mining Reporter. Volume: 56 [LVI], Issue No. 9
Info Publication Date:
August 29, 1907
Info found on page:
203
Info Title:
Isabella Mill Working
Its reported that 3,000 tons of low-grade dump ore are put through the Isabella mill of the Isabella Mines Co. on Bull Hill.
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Above Info was Last Updated on 22.07.2022 (08:14:25)
Above Info was First Seen 22.07.2022

Type/Category of Info:
General Mining News
Info Source From:
The Mining World. Volume: 27 [XXVII], Issue No. 9
Info Publication Date:
August 31, 1907
Info found on page:
364
Info Title:
Isabella Mill Treats 75 Tons Daily
Cripple Creek—The Isabella mill is treating 75 tons daily and the company is making net $6,000 to $7,000 per month.
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Above Info was Last Updated on 01.12.2023 (07:55:07)
Above Info was First Seen 25.11.2010

Type/Category of Info:
General Mining News
Info Source From:
The Western Investors Review. Volume: 14 [XIV], Issue No. 5
Info Publication Date:
October 1907
Info found on page:
35
Info Title:
Isabella Mill September 1907 Output
During September the Isabella plant processed 3,000 tons with an average value of $6.00 and a bullion value of $18,000.
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Above Info was Last Updated on 15.08.2023 (21:18:40)
Above Info was First Seen 18.10.2010

Type/Category of Info:
General Mining News
Info Source From:
Mining Reporter. Volume: 56 [LVI], Issue No. 15
Info Publication Date:
October 10, 1907
Info found on page:
338
Info Title:
Isabella Mill September Output
During September the Isabella Mill treated 3,000 tons at an average value of $6.00 for a total of $18,000.
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Above Info was Last Updated on 23.07.2022 (12:13:40)
Above Info was First Seen 23.07.2022

Type/Category of Info:
General Mining News
Info Source From:
The Mining World. Volume: 27 [XXVII], Issue No. 19
Info Publication Date:
November 9, 1907
Info found on page:
863
Info Title:
Isabella Mill October 1907 Output
During October the Isabella plant processed 3,100 tons with an average value of $6.00 and a bullion value of $18,600.
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Above Info was Last Updated on 10.12.2023 (11:53:59)
Above Info was First Seen 26.11.2010

Type/Category of Info:
General Mining News
Info Source From:
The Mining World. Volume: 27 [XXVII], Issue No. 23
Info Publication Date:
December 7, 1907
Info found on page:
1025
Info Title:
Isabella Mill November 1907 Output
During November the Isabella plant processed 3,000 tons with an average value of $6.00 and a bullion value of $18,000.
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Above Info was Last Updated on 13.12.2023 (18:47:14)
Above Info was First Seen 26.11.2010

Type/Category of Info:
General Mining News
Info Source From:
The Mining World. Volume: 28 [XXVIII], Issue No. 2
Info Publication Date:
January 11, 1908
Info found on page:
75
Info Title:
Isabella Mill December 1907 Output
During December the Isabella plant processed 3,100 tons with an average value of $6 and a bullion value of $18,600.
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Above Info was Last Updated on 14.12.2023 (20:39:51)
Above Info was First Seen 26.11.2010

Type/Category of Info:
General Mining News
Info Source From:
Mining Science. Volume: 57 [LVII], Issue No. 4
Info Publication Date:
January 23, 1908
Info found on page:
105
Info Title:
Isabella Mill Works $6 Ore
The Isabella Mines Company's mill is reported in successful operation on $6 dump ore.
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Above Info was Last Updated on 05.03.2023 (08:27:15)
Above Info was First Seen 08.06.2010

Type/Category of Info:
Article
Info Source From:
The Mining World. Volume: 28 [XXVIII], Issue No. 4
Info Publication Date:
January 25, 1908
Info found on page:
135
Info Title:
Isabella Mill 1907 Production
An approximation of the value of the gold produced during 1907 by the Isabella mill at Cripple Creek (cyanidation) is $187,500.
Notes/Text been Edited:
Abstracted & slightly rewritten from larger text about 'The World's Supply of Gold & Silver', only taking the part linked to Cripple Creek
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Above Info was Last Updated on 15.12.2023 (17:28:51)
Above Info was First Seen 15.12.2023

Type/Category of Info:
General Mining News
Info Source From:
The Mining World. Volume: 28 [XXVIII], Issue No. 4
Info Publication Date:
January 25, 1908
Info found on page:
164
Info Title:
Isabella Mill 1907 Output
During 1907 the Isabella plant processed 30,000 tons with an approximate bullion value of $187,500.
Notes/Text been Edited:
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Above Info was Last Updated on 15.12.2023 (19:12:19)
Above Info was First Seen 28.11.2010

Type/Category of Info:
General Mining News
Info Source From:
The Western Investors Review. Volume: 14 [XIV], Issue No. 9
Info Publication Date:
February 1908
Info found on page:
66
Info Title:
Isabella Mill Increased Capacity
Cripple Creek.—The capacity of the cyanide mill of the Isabella Mines company has been increased one-third by the addition of new solution tanks and the mill will now treat between 4,000 and 5,000 tons a month.
graphic for visual presentation of text At present only dump ore is put through the tanks and this waste rock is averaging close to $6 a ton. The profits from this ore are more than paying the running expenses of the company's mining work.
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Above Info was Last Updated on 17.08.2023 (09:31:47)
Above Info was First Seen 18.10.2010

Type/Category of Info:
General Mining News
Info Source From:
The Mining World. Volume: 28 [XXVIII], Issue No. 6
Info Publication Date:
February 8, 1908
Info found on page:
265
Info Title:
Isabella Mill January 1908 Output
During January the Isabella plant processed 3,700 tons with an average value of $6.00 and a bullion value of $22,200.
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Above Info was Last Updated on 16.12.2023 (20:07:20)
Above Info was First Seen 28.11.2010

Type/Category of Info:
General Mining News
Info Source From:
Mining Science. Volume: 57 [LVII], Issue No. 10
Info Publication Date:
March 5, 1908
Info found on page:
257
Info Title:
Isabella Mill February 1908 Production
During February, the Isabella plant processed 3,750 tons of Cripple Creek ore.
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Above Info was Last Updated on 09.03.2023 (11:34:31)
Above Info was First Seen 10.06.2010

Type/Category of Info:
General Mining News
Info Source From:
The Mining World. Volume: 28 [XXVIII], Issue No. 15
Info Publication Date:
April 11, 1908
Info found on page:
612
Info Title:
Isabella Mill March 1908 Output
During March the Isabella plant processed 3,875 tons making a bullion value of $23,250.00.
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Above Info was Last Updated on 21.12.2023 (17:20:52)
Above Info was First Seen 21.12.2023

Type/Category of Info:
General Mining News
Info Source From:
The Mining World. Volume: 28 [XXVIII], Issue No. 20
Info Publication Date:
May 16, 1908
Info found on page:
806
Info Title:
Isabella Mill April 1908 Output

During April the Isabella plant processed 3,800 tons making a bullion value of $15,200$13,100.

Notes/Text been Edited:
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Above Info was Last Updated on 25.12.2023 (11:16:39)
Above Info was First Seen 25.12.2023

Type/Category of Info:
General Mining News
Info Source From:
Mining and Scientific Press. Volume: 96 [XCVI], Issue No. 2497; 22
Info Publication Date:
May 30, 1908
Info found on page:
723
Info Title:
Isabella Mine & Mill Being Worked
The Isabella is shipping from 75 to 100 tons per day, coming from four different levels—the eighth, ninth, tenth, and eleventh. In addition, the cyanide mill is treating 100 tons of tailing per day. Two shifts are at work.
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Above Info was Last Updated on 08.08.2023 (09:34:10)
Above Info was First Seen 08.08.2023

Type/Category of Info:
General Mining News
Info Source From:
Mining and Scientific Press. Volume: 97 [XCVII], Issue No. 2504; 3
Info Publication Date:
July 18, 1908
Info found on page:
73
Info Title:
Isabella Mill & Mine Happenings
The Isabella cyanide-mill has recently shipped a $12,000 gold brick, which is the clean-up from a 27-day run on the Isabella dumps. These dumps had been previously worked over twice by lessees and averaged only $3.50 per ton.
graphic for visual presentation of text The shipments of ore from the mine continue at the rate of about 45 cars per month, the ore assaying about two ounces per ton.
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Above Info was Last Updated on 11.08.2023 (11:50:46)
Above Info was First Seen 29.09.2010

Type/Category of Info:
Editorial Leader
Info Source From:
Mining Science. Volume: 58 [LVIII], Issue No. 6
Info Publication Date:
August 6, 1908
Info found on page:
102
Info Title:
Isabella Mill July Output
During July the Isabella plant processed 3,875 tons with an average value of $3.00 giving a total value of $11,625.
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Above Info was Last Updated on 01.04.2023 (07:53:45)
Above Info was First Seen 14.06.2010

Type/Category of Info:
General Mining News
Info Source From:
The Sun. Volume: 75 [LXXV], Issue No. 345
Info Publication Date:
August 10, 1908
Info found on page:
7
Info Title:
Isabella Mill Cyanide Mills July 1908 Output
Colorado Springs, Aug. 4.—During July the Isabella mills treated 3,875 tons of oxidized ores averaging $3 each.
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Above Info was Last Updated on 30.03.2024 (12:46:04)
Above Info was First Seen 06.09.2011

Type/Category of Info:
General Mining News
Info Source From:
The Mining World. Volume: 29 [XXIX], Issue No. 8
Info Publication Date:
August 22, 1908
Info found on page:
293
Info Title:
Isabella Mill Treats 100 Tons Daily
Cripple Creek—The Isabella mill treats 100 tons of dump stuff daily.
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Above Info was Last Updated on 31.12.2023 (13:39:56)
Above Info was First Seen 31.12.2023

Type/Category of Info:
Article
Info Source From:
The Mineral Industry, Its Statistics, Technology & Trade in the U.S. and Other Countries. Volume: 16 [XVI]
Info Publication Date:
September 8, 1908
Info found on page:
534 + 548
Info Title:
Isabella Mill 1907 Tidbits

A general description of the Isabella mill, which with a capacity of 125 tons daily, treats ore averaging $6 per ton;

The ore is rough crushed in a 9x15-in. Blake crusher

5 lb. of lime per ton being added at this point.

It then passes to 16x36-in. Davis rolls

followed by 14x27-in. rolls

and over 0.25-in. aperture bumping screens, the oversize returning to the last rolls and the undersize by conveyer to the storage bins.

The six leaching tanks (5x30-ft.) are filled from belt conveyers.

The leaching solutions employed are respectively 4, 3, and 2 lb. KCN per ton.

Precipitation is carried on by zinc shavings in the ordinary way.

The Cost of Milling using dry crushing:

Type Cost
Cyanide treatment 38c.
Tramming ore to mill 22c.
Milling 14c.
Disposal of tailings 9c.
Maintenance 2c.
Assaying and refining 2c.
Total per ton. 87c.
Notes/Text been Edited:
Abstracted and somewhat rewritten from source text about 'Cyanidation During 1907' by Charles H. Fulton.
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Above Info was Last Updated on 23.05.2022 (22:57:48)
Above Info was First Seen 23.05.2022

Type/Category of Info:
General Mining News
Info Source From:
The Mining World. Volume: 29 [XXIX], Issue No. 15
Info Publication Date:
October 10, 1908
Info found on page:
575
Info Title:
Isabella Happenings
Cripple Creek—The Isabella is yielding 50 tons daily. The mill is running and handling about 3,000 tons of dump stuff each month.
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Above Info was Last Updated on 01.01.2024 (17:57:27)
Above Info was First Seen 01.01.2024

Type/Category of Info:
Article
Info Source From:
Mining and Scientific Press. Volume: 98 [XCVIII], Issue No. 2528; 1
Info Publication Date:
January 2, 1909
Info found on page:
43
Info Title:
Isabella Mine & Mill Stuff in 1908
The Isabella is not doing quite as much as usual, but the cyanide mill seems to be successful with the dump ore, and as this property from the 100 to 700 ft. is in the oxidized zone, there should be no trouble in treating many thousands of tons of ore too low to send to the reduction works.
Notes/Text been Edited:
Abstracted from article named 'Cripple Creek in 1908'
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Above Info was Last Updated on 15.04.2022 (16:34:24)
Above Info was First Seen 15.04.2022

Type/Category of Info:
General Mining News
Info Source From:
Mining Science. Volume: 59 [LIX], Issue No. 1517
Info Publication Date:
February 25, 1909
Info found on page:
156
Info Title:
Isabella Mill Gold Retort
A retort, the result of a 30 days' run of the cyanide mill operated by the Isabella Mines Co. on Bull hill, was recently shipped to the Denver mint and showed a value of $6,450.
graphic for visual presentation of text This was from 3,000 tons of low-grade dump ore and represents a value of $2.15 per ton.
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Above Info was Last Updated on 11.03.2022 (19:42:21)
Above Info was First Seen 17.06.2010

Type/Category of Info:
Article
Info Source From:
Mining and Scientific Press. Volume: 98 [XCVIII], Issue No. 2541; 14
Info Publication Date:
April 3, 1909
Info found on page:
489
Info Title:
Cripple Creek Milling Costs

Milling cost at the Isabella Mill in Cripple Creek District is $0.87 per ton, and the custom rates for Cripple Creek ore at the Golden Cycle Mill in Colorado City for various grades of ores are:

Class of ore. Freight to mill. Treatment charge.
Up to $ 8 $ 0.75 $ 3.25
$ 8 to 10 $ 1.00 $ 3.50
$ 10 to 15 $ 1.00 $ 4.25
$ 15 to 20 $ 1.00 $ 5.00
$ 20 to 25 $ 1.25 $ 5.25
$ 25 to 30 $ 1,25 $ 5.75
Notes/Text been Edited:
Abstracted and partly rewritten from source text named 'Cyanidation of Parral Silver Ores'; by H. T. Willis
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Above Info was Last Updated on 19.04.2022 (08:02:35)
Above Info was First Seen 18.04.2022

Type/Category of Info:
General Mining News
Info Source From:
The Western Investors Review. Volume: 15 [XV], Issue No. 11
Info Publication Date:
June 1909
Info found on page:
10
Info Title:
Isabella Mill Doing Good
A cleanup was recently made at the Isabella mill on a month's run, during which time about 125 tons of dump rock was treated daily and the retort is estimated at between $7,500 and $8,000.
graphic for visual presentation of text The mill is running successfully on low-grade mine ore.
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Above Info was Last Updated on 24.08.2023 (09:24:36)
Above Info was First Seen 24.08.2023

Type/Category of Info:
General Mining News
Info Source From:
The Western Investors Review. Volume: 15 [XV], Issue No. 12
Info Publication Date:
July 1909
Info found on page:
10
Info Title:
Isabella Mill June 1909 Output
During June the Isabella plant processed 3,000 tons with an average value of $2.25 and a bullion value of $6,750.
Notes/Text been Edited:
Abstracted from source text in table and restyled/written to sentence form.
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Above Info was Last Updated on 24.08.2023 (12:20:54)
Above Info was First Seen 19.10.2010

Type/Category of Info:
General Mining News
Info Source From:
Mining and Scientific Press. Volume: 98 [XCVIII], Issue No. 2552; 25
Info Publication Date:
June 19, 1909
Info found on page:
840
Info Title:
Isabella Mill Treats 125 Tons Daily
The Isabelle mill is treating 125 tons of $2 ore per day. The monthly clean-up amounts to about $7000.
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Above Info was Last Updated on 21.04.2022 (08:39:10)
Above Info was First Seen 21.04.2022

Type/Category of Info:
General Mining News
Info Source From:
Mining Science. Volume: 60 [LX], Issue No. 1545
Info Publication Date:
September 9, 1909
Info found on page:
235
Info Title:
Isabella Mill August Output
The Isabella Mines Mill treated during August a tonnage of 3,675 tons with an average value of $2.40 for a total of $8,820.00.
Notes/Text been Edited:
Abstracted from source text in table and restyled/written to sentence form.
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Above Info was Last Updated on 10.04.2022 (14:40:45)
Above Info was First Seen 10.04.2022

Type/Category of Info:
General Mining News
Info Source From:
Mining Science. Volume: 60 [LX], Issue No. 1549
Info Publication Date:
October 7, 1909
Info found on page:
331
Info Title:
Isabella Mill September Output
The Isabella Mill treated during September a tonnage of 3,000 tons with an average value of $2.00 for a total of $6,000.
Notes/Text been Edited:
Abstracted from source text in table and restyled/written to sentence form.
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Above Info was Last Updated on 11.04.2022 (13:41:25)
Above Info was First Seen 22.06.2010

Type/Category of Info:
General Mining News
Info Source From:
Mining Science. Volume: 60 [LX], Issue No. 1558
Info Publication Date:
December 9, 1909
Info found on page:
547
Info Title:
Isabella Mill November Output
The Isabella Mill is estimated to have treated during November a tonnage of 1,750 tons with an average value of $4.50 for a total of $7,875.
Notes/Text been Edited:
Abstracted from source text in table and restyled/written to sentence form.
Found this exact text used in the following Publications:
Internet Source Text Link(s) {Found/Seen/Known]:
Above Info was Last Updated on 14.04.2022 (15:11:19)
Above Info was First Seen 23.06.2010

Type/Category of Info:
General Mining News
Info Source From:
Mining Science. Volume: 61 [LXI], Issue No. 1563
Info Publication Date:
January 13, 1910
Info found on page:
44
Info Title:
Isabella Mill December 1909 Output
During December 1909 the Isabella mill processed 3,000 tons with an average value of $4.00 for a total value of $12,000.
Notes/Text been Edited:
Abstracted and partly rewritten from source text.
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Above Info was Last Updated on 10.04.2023 (10:57:29)
Above Info was First Seen 23.06.2010

Type/Category of Info:
General Mining News
Info Source From:
Mining Science. Volume: 61 [LXI], Issue No. 1571
Info Publication Date:
March 10, 1910
Info found on page:
236
Info Title:
Isabella Mill February 1910 Output
During February the Isabella plant processed 500 tons with an average value of $6.50 giving a total value of $3,250.00.
Notes/Text been Edited:
Abstracted from source text in table and restyled/written to sentence form.
Internet Source Text Link(s) {Found/Seen/Known]:
Above Info was Last Updated on 18.04.2023 (09:03:00)
Above Info was First Seen 27.06.2010

Type/Category of Info:
General Mining News
Info Source From:
Mining Science. Volume: 61 [LXI], Issue No. 1575
Info Publication Date:
April 7, 1910
Info found on page:
331
Info Title:
Isabella Mill Closed
The closing down of the cyanide mill of the Isabella Co. by the new management impacted the March output of the Cripple Creek District with a decrease in the tonnage treated at local mills.
Notes/Text been Edited:
Partly rewritten from source text
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Above Info was Last Updated on 19.04.2023 (09:13:44)
Above Info was First Seen 27.06.2010

Type/Category of Info:
General Mining News
Info Source From:
Mining Science. Volume: 62 [LXII], Issue No. 1603
Info Publication Date:
October 20, 1910
Info found on page:
380
Info Title:
Isabella Dump & Mill Being Checked Out
W. H. Gillman, mining engineer and metallurgist of Seattle, Wash., is in Victor in the interests of a Seattle company that has a lease option on the Isabella dump and cyanide mill. The mill has been closed several months. Oxidized ores taken from the mine were run through the plant just before the closing.
graphic for visual presentation of text Mr. Gilman has sampled the dump and is looking over the mill, and, in the event that the lease is taken, changes will be made, including the installation of new machinery.
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Above Info was Last Updated on 18.06.2023 (10:06:33)
Above Info was First Seen 30.04.2023

Type/Category of Info:
General Mining News
Info Source From:
The Engineering and Mining Journal. Volume: 90 [XC], Issue No. 23
Info Publication Date:
December 3, 1910
Info found on page:
1125
Info Title:
Isabella Mill Leased
Isabella—A Seattle company has taken a three-years' lease on this company's mill and tailings dump.
Notes/Text been Edited:
Abstracted and slightly rewritten from source text.
Internet Source Text Link(s) {Found/Seen/Known]:
Above Info was Last Updated on 25.12.2021 (10:28:21)
Above Info was First Seen 26.03.2010

Type/Category of Info:
General Mining News
Info Source From:
Mining Science. Volume: 63 [LXIII], Issue No. 1629
Info Publication Date:
April 20, 1911
Info found on page:
430
Info Title:
Isabella Mill Leased and Being Overhauled
The Western Reduction Co. of Seattle, holding the lease on the cyanide mill, on Bull hill, of the Isabella Mines Co., has a force of men at work overhauling and repairing the plant and milling machinery has been ordered from a Denver house.
Internet Source Text Link(s) {Found/Seen/Known]:
Above Info was Last Updated on 14.05.2023 (09:39:53)
Above Info was First Seen 14.05.2023

Type/Category of Info:
General Mining News
Info Source From:
Mining Science. Volume: 63 [LXIII], Issue No. 1630
Info Publication Date:
April 27, 1911
Info found on page:
456
Info Title:
Isabella Mill Excepted Operating by May 1st
Machinery for the cyanide mill of the Isabella Mines Co., from the Denver machine works of Hendrie & Bolthoff, has arrived in the district. The mill leased to the Western Reduction Co. will be in operation by the 1st of May.
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Above Info was Last Updated on 14.05.2023 (09:39:33)
Above Info was First Seen 14.05.2023

Type/Category of Info:
General Mining News
Info Source From:
Mining Science. Volume: 63 [LXIII], Issue No. 1634
Info Publication Date:
May 25, 1911
Info found on page:
556
Info Title:
Isabella Mill Working Again
Work commenced at the cyanide mill of the Isabella Mines Co., on Bull hill. The plant has been leased to the Western Reduction Co., and this company will retreat the mill dumps.
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Above Info was Last Updated on 18.05.2023 (07:15:15)
Above Info was First Seen 18.05.2023

Type/Category of Info:
General Mining News
Info Source From:
Mining Science. Volume: 63 [LXIII], Issue No. 1636
Info Publication Date:
June 8, 1911
Info found on page:
603
Info Title:
Isabella Mill Started Up Again
The Western Reduction Co., holding a lease on the Isabella mill, has started the plant. The mill has been completely remodeled.
Internet Source Text Link(s) {Found/Seen/Known]:
Above Info was Last Updated on 19.05.2023 (19:17:36)
Above Info was First Seen 19.05.2023

Type/Category of Info:
General Mining News
Info Source From:
Mining Science. Volume: 63 [LXIII], Issue No. 1639
Info Publication Date:
June 29, 1911
Info found on page:
675
Info Title:
Isabelle Mill Might Treat More Ore
C. W. Hess, general manager of the Western Reduction Co., operating the Isabella mill, says that if the present treatment continues the mill will handle 15,000 tons this month instead of 10,000 tons, as originally estimated. The solution from the leaching tanks is being precipitated continually, but a cleanup will not be made until July 1.
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Above Info was Last Updated on 21.05.2023 (07:55:09)
Above Info was First Seen 21.05.2023

Type/Category of Info:
Special/Editorial Correspondence
Info Source From:
The Engineering and Mining Journal. Volume: 92 [XCII], Issue No. 1
Info Publication Date:
July 1, 1911
Info found on page:
34
Info Title:
Isabella Mill June Output
Denver, June 24—The Isabella mill June output is 15,000 tons, this is a greater tonnage treated than any other plant in the district, which is due to the fact that it is not necessary to grind the tailings.
Notes/Text been Edited:
Abstracted & slightly rewritten from a somewhat longer text about Four Cripple Creek companies who have already made dividend announcements.
Internet Source Text Link(s) {Found/Seen/Known]:
Above Info was Last Updated on 30.10.2020 (11:04:30)
Above Info was First Seen 23.03.2019

Type/Category of Info:
General Mining News
Info Source From:
The Engineering and Mining Journal. Volume: 92 [XCII], Issue No. 1
Info Publication Date:
July 1, 1911
Info found on page:
37
Info Title:
Isabella Mill in Operation Again
After spending two months in repairing the Isabella mill, the Western Reduction Company has the plant in operation. Mr. Hess, local manager, says that the capacity is 27.000 tons per month; that 10,000 tons will be treated at first, but which will soon be increased to 20,000 tons per month.
graphic for visual presentation of text He expects to make $1.20 to $1.40 per ton net.
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Above Info was Last Updated on 14.05.2023 (09:40:30)
Above Info was First Seen 23.03.2019

Type/Category of Info:
Article
Info Source From:
Mining Science. Volume: 64 [LXIV], Issue No. 1641
Info Publication Date:
July 13, 1911
Info found on page:
35
Info Title:
Isabella Mill June 1911 Output
During June the Isabella plant processed 3,900 tons with an average value of $1.20 and a bullion value of $4,680.
Notes/Text been Edited:
Abstracted from source text in table and restyled/written to sentence form.
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Above Info was Last Updated on 22.05.2023 (08:26:06)
Above Info was First Seen 22.05.2023

Type/Category of Info:
Article
Info Source From:
Mining Science. Volume: 64 [LXIV], Issue No. 1647
Info Publication Date:
August 24, 1911
Info found on page:
177
Info Title:
Isabella Mill July 1911 Output
During July the Isabella plant processed 2,750 tons with an average value of $1.80 and a bullion value of $4,950.
Notes/Text been Edited:
Abstracted from source text in table and restyled/written to sentence form.
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Above Info was Last Updated on 26.05.2023 (08:34:50)
Above Info was First Seen 26.05.2023

Type/Category of Info:
General Mining News
Info Source From:
The Engineering and Mining Journal. Volume: 92 [XCII], Issue No. 9
Info Publication Date:
August 26, 1911
Info found on page:
421
Info Title:
Isabella Mill Working at Full Capacity
Isabella—The mill is operating at full capacity.
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Above Info was Last Updated on 30.10.2020 (11:04:30)
Above Info was First Seen 26.03.2019

Type/Category of Info:
General Mining News
Info Source From:
The Engineering and Mining Journal. Volume: 92 [XCII], Issue No. 11
Info Publication Date:
September 9, 1911
Info found on page:
515
Info Title:
Isabella Mill Runs Through Old Mill Tailings
Isabella—The mill being operated by the Western Reduction Company, is treating about 2500 tons per month of the tailings from the old mill.
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Above Info was Last Updated on 14.05.2023 (09:41:19)
Above Info was First Seen 26.03.2019

Type/Category of Info:
Abstracts of Official Reports
Info Source From:
Mining Science. Volume: 64 [LXIV], Issue No. 1650
Info Publication Date:
September 14, 1911
Info found on page:
257
Info Title:
Isabella Mines Co. Stockholders Report Abstracts
Manager A. C. Gardner and Superintendent Lester S. Grant of the Isabella Mines Co. have just issued a report to stockholders, as follows, covering operations of the property for the last several months:
graphic for visual presentation of text
graphic for visual presentation of text Since our last report to you, the production by lessees from the Lee shaft has averaged about 30 narrow-gauge cars of ore per month, and an average of 12 narrow-gauge cars of ore per month from the Empire shaft, making a total average of 42 cars per month of low grade ore.
graphic for visual presentation of text
graphic for visual presentation of text The Western Investment Co., having a lease on the Empire State property, has three sets of sub-lessees at work, and on company account they have sunk a winze below the eighth level of the Empire, on the junction of a dike with the No. 2 Empire vein; the winze is nearly 40 ft. deep, with good values in the bottom. This is the deepest workings on the property where commercial ore has been opened up.
graphic for visual presentation of text
graphic for visual presentation of text The Co-Operative Mining and Leasing Co., working through the School Section shaft, has done 1,000 ft. of drifting and crosscutting on the Isabella ground, opening several promising veins, and steadily pushing exploration work, with the expectation of cutting pay ore at any time; the ground they are working has never been prospected before, and it looks very promising.
graphic for visual presentation of text
graphic for visual presentation of text Fackerall & Co. continue to produce considerable ore, mostly of low grade, at the present time. Their production is not as large as it has been; they are now mining below the sixth level, with the intention of crosscutting for the same ore on the eighth level.
graphic for visual presentation of text
graphic for visual presentation of text The Western Reduction Co., having a lease on the mill tailings dump, are treating the same in the Isabella mill, but up to the present time the results have not been very satisfactory. They are working steadily and expect to perfect the plant and put the enterprise on a profitable basis soon.
graphic for visual presentation of text
graphic for visual presentation of text On your company account over 1,500 ft. of development work has been done during the last eight months, without any beneficial results, the same representing an outlay of about $8,000.
graphic for visual presentation of text
graphic for visual presentation of text We now have eight sets of lessees at work on the property, which is a considerable falling off since our last report, due to the disappointing conditions in the property.
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graphic for visual presentation of text The board of directors, after discussing matters fully, thought best to sink the Lee shaft to a greater depth. Our fourteenth level, which is 1,100 ft. deep, corresponds with the 700-ft. level of the Golden Cycle and the 800-ft. level of the Vindicator.
graphic for visual presentation of text Below these levels both the Cycle and the Vindicator have been mining their richest ore; the vein system on these properties and the Isabella have the same trend and are located on the same hill. The board of directors has decided to sink the shaft about 500 ft. deeper. This sinking will be done as rapidly as possible.
graphic for visual presentation of text We are now down 125 ft. below the fourteenth level, and we are pleased to say the shaft rock is highly mineralized.
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graphic for visual presentation of text In order to do this work it was necessary to raise funds, so the company had to borrow $10,000 at 6 per cent.
graphic for visual presentation of text
graphic for visual presentation of text It was found necessary to purchase quite a lot of new equipment; a number of air drills have been purchased, as well as a new air compressor. This new air compressor was installed lately and is working very satisfactory. It is the latest model Ingersoll-Rand, electrically driven, and is especially adapted to great variation of load and the high altitude of the district.
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graphic for visual presentation of text The cost of the foundation for the compressor and the preliminary work for sinking the shaft was near $3,500.
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Above Info was Last Updated on 29.05.2023 (07:55:02)
Above Info was First Seen 29.05.2023

Type/Category of Info:
General Mining News
Info Source From:
Mining Science. Volume: 64 [LXIV], Issue No. 1659
Info Publication Date:
November 16, 1911
Info found on page:
ad39-ad40
Info Title:
Isabella Mill Closed Down for Repairs
The Isabella mill, operated under lease by the Josephs brothers, has been closed down until next March for repairs. The leasers will install heavier shafting, heavier conveyors and generally repair the mill so as to permit a daily tonnage of 500 tons.
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Above Info was Last Updated on 10.06.2023 (07:59:32)
Above Info was First Seen 10.06.2023

Type/Category of Info:
General Mining News
Info Source From:
Mining Science. Volume: 65 [LXV], Issue No. 1683
Info Publication Date:
April 25, 1912
Info found on page:
xxxiv + xxxv
Info Title:
Isabella Mill, Leased to Morris Bros., to Start Up Within Next 10 Days
The Isabella mill, which has been leased to the Morris brothers of Victor, will start up within the next 10 days. In the summer time the mill will handle tailings from the mill but in the winter the dump rock will be given the mill.
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Above Info was Last Updated on 28.06.2023 (18:24:49)
Above Info was First Seen 28.06.2023

Type/Category of Info:
General Mining News
Info Source From:
Mining Science. Volume: 65 [LXV], Issue No. 1690
Info Publication Date:
June 13, 1912
Info found on page:
xxxv
Info Title:
Isabella Mill Will Start in June
The Isabella mill will start in June.
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Above Info was Last Updated on 01.07.2023 (20:36:52)
Above Info was First Seen 15.07.2010

Type/Category of Info:
General Mining News
Info Source From:
The Mining and Scientific Press. Volume: 107 [CVII], Issue No. 2
Info Publication Date:
July 12, 1913
Info found on page:
72
Info Title:
Isabella Mill Production; June 1913
According to local statistics, the following Cripple Creek mill gold production was:
graphic for visual presentation of text
graphic for visual presentation of textName
graphic for visual presentation of textTons.
graphic for visual presentation of textAv. val.
graphic for visual presentation of textGross value.
graphic for visual presentation of textIsabella
graphic for visual presentation of text625
graphic for visual presentation of text2.00
graphic for visual presentation of text1,250
graphic for visual presentation of text
Notes/Text been Edited:
Abstracted and somewhat rewritten slightly
Above Info was Last Updated on 30.10.2020 (11:04:30)
Above Info was First Seen 21.10.2019

Type/Category of Info:
General Mining News
Info Source From:
The Mining and Scientific Press. Volume: 107 [CVII], Issue No. 6
Info Publication Date:
August 9, 1913
Info found on page:
241
Info Title:
Isabella Mill Production; July 1913
According to local statistics, the following Cripple Creek mill July output was:
graphic for visual presentation of text
graphic for visual presentation of textPlant
graphic for visual presentation of textTons
graphic for visual presentation of textAv. val.
graphic for visual presentation of textGross value.
graphic for visual presentation of textIsabella
graphic for visual presentation of text700
graphic for visual presentation of text2.00
graphic for visual presentation of text1,400
Notes/Text been Edited:
Abstracted and somewhat rewritten slightly
Above Info was Last Updated on 30.10.2020 (11:04:30)
Above Info was First Seen 23.10.2019

Type/Category of Info:
General Mining News
Info Source From:
The Mining and Scientific Press. Volume: 107 [CVII], Issue No. 9
Info Publication Date:
August 30, 1913
Info found on page:
357
Info Title:
Cripple Creek Local Mill Production
During July, eight of the local mills, the Portland, Stratton's Independence, Colburn-Ajax, Kavanagh-Jo Dandy, Gaylord-Dante, Rex Mining & Milling Co., Wild Horse, and Isabella plants, treated 35,373 tons of ore with a gross value of $85,428.
graphic for visual presentation of text This low-grade ore ranged in value from $1.10 to $2.84 per ton, with a general average value of $2.41 per ton.
Notes/Text been Edited:
Abstracted from a somewhat longer source text talking about several local mills.
Above Info was Last Updated on 30.10.2020 (11:04:30)
Above Info was First Seen 11.11.2019

Type/Category of Info:
General Mining News
Info Source From:
The Mining and Scientific Press. Volume: 107 [CVII], Issue No. 10
Info Publication Date:
September 6, 1913
Info found on page:
392
Info Title:
Isabella Mill Production; August 1913
According to local statistics, the following Cripple Creek mill August output was:
graphic for visual presentation of text
graphic for visual presentation of textPlants
graphic for visual presentation of textOre treated tons
graphic for visual presentation of textAv. val. per ton
graphic for visual presentation of textGross val.
graphic for visual presentation of textIsabella
graphic for visual presentation of text750
graphic for visual presentation of text$ 2.00
graphic for visual presentation of text$ 1,500
graphic for visual presentation of text
Notes/Text been Edited:
Abstracted and somewhat rewritten slightly
Above Info was Last Updated on 30.10.2020 (11:04:30)
Above Info was First Seen 11.11.2019

Type/Category of Info:
General Mining News
Info Source From:
The Mining and Scientific Press. Volume: 107 [CVII], Issue No. 15
Info Publication Date:
October 11, 1913
Info found on page:
589
Info Title:
Isabella Mill Production; September 1913
The reported production of the following district mill during September was as follows:
graphic for visual presentation of text
graphic for visual presentation of textPlants
graphic for visual presentation of textTonnage
graphic for visual presentation of textAv. val.
graphic for visual presentation of textGross val.
graphic for visual presentation of textIsabella
graphic for visual presentation of text925
graphic for visual presentation of text3.20
graphic for visual presentation of text$ 2,960
Notes/Text been Edited:
Abstracted and somewhat rewritten slightly
Above Info was Last Updated on 30.10.2020 (11:04:30)
Above Info was First Seen 18.11.2019

Type/Category of Info:
General Mining News
Info Source From:
The Mining and Scientific Press. Volume: 107 [CVII], Issue No. 23
Info Publication Date:
December 6, 1913
Info found on page:
907
Info Title:
Isabella Mill Production; November 1913
The Estimated production of the following district mill during November is as follows:
graphic for visual presentation of text
graphic for visual presentation of textWhere treated
graphic for visual presentation of textTons
graphic for visual presentation of textAv. value
graphic for visual presentation of textGross value
graphic for visual presentation of textIsabella mines
graphic for visual presentation of text700
graphic for visual presentation of text$ 3.00
graphic for visual presentation of text$ 2,100
graphic for visual presentation of text
Notes/Text been Edited:
Abstracted and somewhat rewritten slightly
Above Info was Last Updated on 30.10.2020 (11:04:30)
Above Info was First Seen 26.01.2020

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