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Info Database Last Updated 13.12.2021 (Entity News entries: 34)
Type/Category of Info:
ArticleInfo Source From:
The Short Line Blue Book. Volume: 2 [II], Issue No. 1Info Publication Date:
April 1902Info found on page:
10Info Title:
Chlorination Mill of Portland Co. Will Opened About May 15 The new chlorination mill of the Portland Company will be opened about May 15. It was built at Colorado Springs by the Portland M. & M. Company and will have a capacity of 300 tons a day. This can be increased, however, should the output of the mine warrant it.
The opening of this mill is an event of great importance in the mining world. The fact that it is built to handle the output of the Portland mine alone is a striking proof of the greatness of that property, and its completion makes the company entirely independent of the smelters.
The new industry will give employment to a large number of Colorado Springs workmen.
The opening of this mill is an event of great importance in the mining world. The fact that it is built to handle the output of the Portland mine alone is a striking proof of the greatness of that property, and its completion makes the company entirely independent of the smelters. The new industry will give employment to a large number of Colorado Springs workmen.Above Info was Last Updated on 10.10.2021 (18:51:24)
Above Info was First Seen 28.08.2021
Type/Category of Info:
ArticleInfo Source From:
The Cripple Creek Times. Issue No. 1Info Publication Date:
January 1, 1903Info found on page:
7Info Title:
Portland Mill Production 1902 During 1902 the Portland Reduction Plant at Colorado City handled 41,500 tons of ore at a value of $ 1,225,000.
Notes/Text been Edited:
Abstracted, restyled and rewritten from source text.Internet Source Text Link(s) {Found/Seen/Known]:
- Internet Archive: ⊞ The Cripple Creek Times (New Year 1903)
Above Info was Last Updated on 11.10.2021 (21:12:43)
Above Info was First Seen 09.09.2021
Type/Category of Info:
General Mining NewsInfo Source From:
The Engineering and Mining Journal. Volume: 75 [LXXV], Issue No. 8Info Publication Date:
February 21, 1903Info found on page:
310Info Title:
Portland Mill in Colorado City Generated Savings Portland Gold Mining Company— The annual report is very elaborate, and shows the company to be in good shape financially with good ore reserves. The new mill at Colorado City has saved the company about $1.60 per ton on the 40,000 or more tons handled during the time it has been running, making in all about $60,000.
Notes/Text been Edited:
Abstracted and restructured, partly rewritten, from a larger text about the company and its affairs.Internet Source Text Link(s) {Found/Seen/Known]:
- Hathi Trust Digital Library: ⊞ Direct to Page 310
Above Info was Last Updated on 30.10.2020 (11:04:30)
Above Info was First Seen 31.03.2019
Type/Category of Info:
General Mining NewsInfo Source From:
The Engineering and Mining Journal. Volume: 75 [LXXV], Issue No. 10Info Publication Date:
March 7, 1903Info found on page:
384Info Title:
Millmen's Strike Effect on Colorado City Mills The Mill and Smelter Men's Union has voted to extend the strike at the Standard Mill in Colorado City to the Telluride and Portland mills. The Portland Mine may have to close. The Telluride and Portland managers refused to advance wages.
The Standard Mill, where the strike began, is still running with non-union men, who lodge in the mill buildings.
The Standard Mill, where the strike began, is still running with non-union men, who lodge in the mill buildings.Internet Source Text Link(s) {Found/Seen/Known]:
- Hathi Trust Digital Library: ⊞ Direct to Page 384
Above Info was Last Updated on 30.10.2020 (11:04:30)
Above Info was First Seen 06.04.2019
Type/Category of Info:
General Mining NewsInfo Source From:
The Engineering and Mining Journal. Volume: 75 [LXXV], Issue No. 11Info Publication Date:
March 14, 1903Info found on page:
423Info Title:
Colorado City Mills Runs Protected The Standard and Portland mills at Colorado City are running under the protection of troops. The refusal of the Cripple Creek mine owners to stop shipping ore to the mills will doubtless result in a miners' strike unless it happens that the unions of Cripple Creek will refuse to recognize the authority of the Western Federation of miners and stick to their work. It is generally admitted that this strike is a fight to a finish between the Western Federation of Miners and the mine owners, and mill operators of Colorado, and that the struggle has but started.
Notes/Text been Edited:
Restructured the text about the Millmen's StrikeInternet Source Text Link(s) {Found/Seen/Known]:
- Hathi Trust Digital Library: ⊞ Direct to Page 423
Above Info was Last Updated on 30.10.2020 (11:04:30)
Above Info was First Seen 06.02.2019
Type/Category of Info:
General Mining NewsInfo Source From:
The Engineering and Mining Journal. Volume: 75 [LXXV], Issue No. 16Info Publication Date:
April 18, 1903Info found on page:
610Info Title:
Portland Mill The mill is said to be doing very well, and everything is in good condition.
Notes/Text been Edited:
Abstracted from info about their dividend payment.Above Info was Last Updated on 30.10.2020 (11:04:30)
Above Info was First Seen 02.02.2019
Type/Category of Info:
General Mining NewsInfo Source From:
The Engineering and Mining Journal. Volume: 75 [LXXV], Issue No. 17Info Publication Date:
April 25, 1903Info found on page:
646Info Title:
Portland Mill to Treat Full Dump of an Old Portland Shaft Portland Gold Mining Company.—One of the dumps of one of the old shafts is being shipped bodily to the mill at Colorado City.
Notes/Text been Edited:
Abstracted from a somewhat longer text about the Portland CompanyInternet Source Text Link(s) {Found/Seen/Known]:
- Hathi Trust Digital Library: ⊞ Direct to Page 646
Above Info was Last Updated on 30.10.2020 (11:04:30)
Above Info was First Seen 18.04.2019
Type/Category of Info:
General Mining NewsInfo Source From:
The Engineering and Mining Journal. Volume: 75 [LXXV], Issue No. 21Info Publication Date:
May 23, 1903Info found on page:
797Info Title:
Stearns-Rogers Manufacturing Co. Suit Against Portland Gold Mining Co. Portland Gold Mining Company.—The Stearns-Rogers Manufacturing Company has brought suit against this company in the United States Circuit Court to collect $54,045.67 alleged to be due on construction of the Portland chlorination mill. The money is alleged to be due on several contracts. A part of each of the total amounts has been paid, but the complaint states that a part of each yet remains unpaid and uncollected.
The manufacturers were to furnish the plans, provide a superintendent for construction and to furnish certain parts of the material used. For the furnishing of plans and supervising of construction the manufacturing company was to get a certain per cent of the total cost. The entire works are alleged to have cost about $700,000, the manufacturing company furnishing about $112,772 of one kind of material and $52,383 of another kind. There is charged to be due $24,991 of the percentage for plans and construction, the balance of the amount sued for being on the material furnished.
The objection of the Portland Company to paying the claim, has not been made public, though it is understood to be faulty construction of the mill and non-fulfillment of contract.
The manufacturers were to furnish the plans, provide a superintendent for construction and to furnish certain parts of the material used. For the furnishing of plans and supervising of construction the manufacturing company was to get a certain per cent of the total cost. The entire works are alleged to have cost about $700,000, the manufacturing company furnishing about $112,772 of one kind of material and $52,383 of another kind. There is charged to be due $24,991 of the percentage for plans and construction, the balance of the amount sued for being on the material furnished. The objection of the Portland Company to paying the claim, has not been made public, though it is understood to be faulty construction of the mill and non-fulfillment of contract.Internet Source Text Link(s) {Found/Seen/Known]:
- Hathi Trust Digital Library: ⊞ Direct to Page 797
Above Info was Last Updated on 30.10.2020 (11:04:30)
Above Info was First Seen 21.04.2019
Type/Category of Info:
Industrial/Construction NotesInfo Source From:
The Engineering and Mining Journal. Volume: 77 [LXXVII], Issue No. 14Info Publication Date:
April 7, 1904Info found on page:
577Info Title:
Portland Mill's Holthoff Roasting Furnace The Power & Mining Machinery Co. of Cudahy, Wis., has installed a 100-ton Holthoff revolving hearth roasting furnace in the Portland mill near Colorado Springs, Colo.
Internet Source Text Link(s) {Found/Seen/Known]:
- Hathi Trust Digital Library: ⊞ Direct to Page 577
Above Info was Last Updated on 30.10.2020 (11:04:30)
Above Info was First Seen 17.03.2019
Type/Category of Info:
ArticleInfo Source From:
Eagle Valley Enterprise. Volume: 9 [IX], Issue No. 30Info Publication Date:
June 8, 1906Info found on page:
5Info Title:
Portland Mill, Colorado City May Production During May the output of the Portland mill was 10,000 tons of average value $26.00 for a total of $260,000
Notes/Text been Edited:
Abstracted and partly rewritten from source text.Internet Source Text Link(s) {Found/Seen/Known]:
- Colorado Historic Newspaper Collection: ⊞ Eagle Valley Enterprise, June 8, 1906
Above Info was Last Updated on 10.10.2021 (18:51:24)
Above Info was First Seen 02.11.2020
Type/Category of Info:
Special/Editorial CorrespondenceInfo Source From:
The Mining and Scientific Press. Volume: 94 [XCIV], Issue No. 4Info Publication Date:
January 26, 1907Info found on page:
106Info Title:
Findley Strike to Be Sent to Portland MillCripple Creek, Colorado.
Strike in the Findley.
A strike of good ore is reported to have been made on the Findley mine on Bull hill. At a depth of 850 ft. on the tenth level a new vein has been encountered and from the assay-returns the ore should ship between two and three ounces.
The Findley ore is to be treated at the Portland mill at Colorado City until such time as the Golden Cycle is in operation. This will be the first custom ore the Portland mill will have treated.
Strike in the Findley. A strike of good ore is reported to have been made on the Findley mine on Bull hill. At a depth of 850 ft. on the tenth level a new vein has been encountered and from the assay-returns the ore should ship between two and three ounces. The Findley ore is to be treated at the Portland mill at Colorado City until such time as the Golden Cycle is in operation. This will be the first custom ore the Portland mill will have treated.Above Info was Last Updated on 10.10.2021 (18:51:24)
Above Info was First Seen 20.05.2021
Type/Category of Info:
Special/Editorial CorrespondenceInfo Source From:
The Mining and Scientific Press. Volume: 94 [XCIV], Issue No. 7Info Publication Date:
February 16, 1907Info found on page:
206Info Title:
Portland Mill Completed a Cyanide PlantDenver, Colorado.
Competition Between Cyanidation and Chlorination.
With the 16% reduction in the output for 1906 for the Cripple Creek District, compared with that of 1905, has come a corresponding pressure for the reduction of treatment charges. Cyanidation has locked horns with chlorination in what promises to be a death struggle and all who are interested are anxiously awaiting the outcome.
The Portland Gold Mining Co. is just completing a 400-ton plant for fine grinding in cyanide solution in tube-mills to treat the tailing that has been accumulating from its chlorination plant. This plant is supposed to contain $2.50 per ton, hence a handsome profit is expected. One tube-mill is lined with silex blocks and it is planned to line the other with cast-iron liners, which will furnish a useful comparison.
Altogether, it seems as though cyanidation were destined soon to triumph. Bromo-cyanidation will now have a fair chance, and it would not be strange if it were to make a better showing than it has in previous trials.
Competition Between Cyanidation and Chlorination. With the 16% reduction in the output for 1906 for the Cripple Creek District, compared with that of 1905, has come a corresponding pressure for the reduction of treatment charges. Cyanidation has locked horns with chlorination in what promises to be a death struggle and all who are interested are anxiously awaiting the outcome. The Portland Gold Mining Co. is just completing a 400-ton plant for fine grinding in cyanide solution in tube-mills to treat the tailing that has been accumulating from its chlorination plant. This plant is supposed to contain $2.50 per ton, hence a handsome profit is expected. One tube-mill is lined with silex blocks and it is planned to line the other with cast-iron liners, which will furnish a useful comparison. Altogether, it seems as though cyanidation were destined soon to triumph. Bromo-cyanidation will now have a fair chance, and it would not be strange if it were to make a better showing than it has in previous trials.Notes/Text been Edited:
Abstracted, restyled and slightly rewritten from source text.Above Info was Last Updated on 10.10.2021 (18:51:24)
Above Info was First Seen 21.05.2021
Type/Category of Info:
General Mining NewsInfo Source From:
Eagle County Blade. Volume: 13 [XIII], Issue No. 38Info Publication Date:
March 21, 1907Info found on page:
4Info Title:
Portland Mill Workings The Portland mill is treating a large quantity of custom ore, which keeps that plant running to its full capacity, while the company is doing work on the mine.
Notes/Text been Edited:
Abstracted from source text.Internet Source Text Link(s) {Found/Seen/Known]:
- Colorado Historic Newspaper Collection: ⊞ The Eagle County Blade, March 21, 1907
Above Info was Last Updated on 10.10.2021 (18:51:24)
Above Info was First Seen 16.01.2021
Type/Category of Info:
General Mining NewsInfo Source From:
The Mining and Scientific Press. Volume: 94 [XCIV], Issue No. 12Info Publication Date:
March 23, 1907Info found on page:
357Info Title:
Economic Mill Machinery Sold to Portland Gold Mining Co. Cripple Creek, March 18. (Special Correspondence)—Some of the slightly damaged machinery of the Economic mill, situated in Eclipse gulch, which was burned some weeks ago, has been sold to the Portland Gold Mining Co. It will be used in the new cyanide plant being constructed at Colorado City for the treatment of the tailing from the Portland mill.
Above Info was Last Updated on 10.10.2021 (18:51:24)
Above Info was First Seen 22.05.2021
Type/Category of Info:
Special/Editorial CorrespondenceInfo Source From:
The Mining and Scientific Press. Volume: 94 [XCIV], Issue No. 15Info Publication Date:
April 13, 1907Info found on page:
456Info Title:
Portland Mill Cyanide Tailing Plant Expected Ready It is expected that the new cyanide tailing plant of the Portland mill at Colorado City will be ready for operation in April. The plant will have a capacity of 300 tons per day, treating the enormous dump accumulated from the chlorination mill. A belt-conveyor will be used to transmit the tailing from the dump to the mill.
Above Info was Last Updated on 10.10.2021 (18:51:24)
Above Info was First Seen 23.05.2021
Type/Category of Info:
Special/Editorial CorrespondenceInfo Source From:
The Mining and Scientific Press. Volume: 94 [XCIV], Issue No. 17Info Publication Date:
April 27, 1907Info found on page:
526Info Title:
Clara D. Ore Might Go to Portland Mill The Union Leasing Co. operating on the South Clara D. of the Lexington property is stated to have entered into negotiations with the management of the Portland mill at Colorado City for the treatment of about 50 tons of its ore per day. There are large quantities of ore that will run in the neighborhood of $10 per ton in the lower levels of the mine, the width of the orebody ranging from 15 to 20 ft.
A trial shipment to the mill has given satisfactory results.
A trial shipment to the mill has given satisfactory results.Above Info was Last Updated on 10.10.2021 (18:51:24)
Above Info was First Seen 24.05.2021
Type/Category of Info:
Special/Editorial CorrespondenceInfo Source From:
The Mining and Scientific Press. Volume: 94 [XCIV], Issue No. 18Info Publication Date:
May 4, 1907Info found on page:
558Info Title:
Portland Mill New Tailing Plant is Satisfactory Recent progress at Cripple Creek includes the new tailing-plant of the Portland Gold Mining Co. which is in full operation, and yielding satisfactory results.
Notes/Text been Edited:
Abstracted and slightly rewritten from source text.Above Info was Last Updated on 10.10.2021 (18:51:24)
Above Info was First Seen 24.05.2021
Type/Category of Info:
ArticleInfo Source From:
The Mining Magazine. Volume: 2 [II], Issue No. 1Info Publication Date:
January 1910Info found on page:
23Info Title:
Portland Mill, Colorado City Production; November 1909 The Portland mill crushed in November 9000 tons worth $171,000.
Notes/Text been Edited:
Abstracted and slightly rewritten from source text.Internet Source Text Link(s) {Found/Seen/Known]:
- Internet Archive: ⊞ The Mining Magazine (January 1910; p23)
Above Info was Last Updated on 10.10.2021 (18:51:24)
Above Info was First Seen 05.05.2021
Type/Category of Info:
Special/Editorial CorrespondenceInfo Source From:
The Mining Magazine. Volume: 4 [IV], Issue No. 1Info Publication Date:
January 1911Info found on page:
34Info Title:
Portland Mill Satisfy The Portland G.M. Co. plant at Colorado Springs, handling high-grade ore, continues to give satisfaction.
Notes/Text been Edited:
AbstractedInternet Source Text Link(s) {Found/Seen/Known]:
- Internet Archive: ⊞ The Mining Magazine (January 1911; p34)
Above Info was Last Updated on 10.10.2021 (18:51:24)
Above Info was First Seen 05.05.2021
Type/Category of Info:
Special/Editorial CorrespondenceInfo Source From:
The Mining Magazine. Volume: 4 [IV], Issue No. 1Info Publication Date:
January 1911Info found on page:
34Info Title:
Portland Mill, Colorado City Production; November 1913 During November Shipments from the district to the Portland Mill amounted to 10,0000 tons of an average $20.00 per ton for a total of $200,000.
Notes/Text been Edited:
Abstracted and partly rewritten from source text.Internet Source Text Link(s) {Found/Seen/Known]:
- Internet Archive: ⊞ The Mining Magazine (January 1911; p34)
Above Info was Last Updated on 10.10.2021 (18:51:24)
Above Info was First Seen 05.05.2021
Type/Category of Info:
Editorial LeaderInfo Source From:
The Engineering and Mining Journal. Volume: 92 [XCII], Issue No. 5Info Publication Date:
July 29, 1911Info found on page:
195Info Title:
Chlorination of Cripple Creek Ore Lost Out to Cyaniding In the early days of gold milling in the Cripple Creek district the cyanide mills were worsted in the competition with the chlorination works and, for many years, the latter held the field.
Improvements in cyanidation, however, altered the conditions, and the cyanide mills are now undoubtedly ahead.
Emphasis is given to this conclusion by the fact that the Portland company recently decided to change its mill at Colorado City, having a capacity for the treatment of 10,000 tons of ore per month, from the chlorination to the cyanide process.
This will leave the United States Reduction and Refining Company with the only chlorination mill in the field, and three of its chlorination mills are idle.
Improvements in cyanidation, however, altered the conditions, and the cyanide mills are now undoubtedly ahead. Emphasis is given to this conclusion by the fact that the Portland company recently decided to change its mill at Colorado City, having a capacity for the treatment of 10,000 tons of ore per month, from the chlorination to the cyanide process. This will leave the United States Reduction and Refining Company with the only chlorination mill in the field, and three of its chlorination mills are idle.Internet Source Text Link(s) {Found/Seen/Known]:
- Hathi Trust Digital Library: ⊞ Direct to Page 195
Above Info was Last Updated on 30.10.2020 (11:04:30)
Above Info was First Seen 25.03.2019
Type/Category of Info:
Editorial LeaderInfo Source From:
The Mining Magazine. Volume: 5 [V], Issue No. 6Info Publication Date:
December 1911Info found on page:
409Info Title:
Portland Mill Left Chlorination for Cyaniding THE BATTLE of the processes has been nowhere waged more vigorously than in Colorado, where chlorination and cyanidation have competed with varying success during two decades for preference in the treatment of the ores of Cripple Creek.
Cyanidation is the victor, for it has been apparent for several years that the application of tube-milling and cyanidation to the tailing from the chlorination plants had placed these in a humiliating position. The Portland Gold Mining Company has recently changed its mill to cyanidation.
Cyanidation is the victor, for it has been apparent for several years that the application of tube-milling and cyanidation to the tailing from the chlorination plants had placed these in a humiliating position. The Portland Gold Mining Company has recently changed its mill to cyanidation.Notes/Text been Edited:
Abstracted and partly rewritten from source text.Internet Source Text Link(s) {Found/Seen/Known]:
- Internet Archive: ⊞ The Mining Magazine (December 1911; p409)
Above Info was Last Updated on 10.10.2021 (18:51:24)
Above Info was First Seen 15.05.2021
Type/Category of Info:
Special/Editorial CorrespondenceInfo Source From:
The Engineering and Mining Journal. Volume: 92 [XCII], Issue No. 25Info Publication Date:
December 16, 1911Info found on page:
1195Info Title:
Portland Mill Treated Tonnage (But Which Mill is It?) Denver Dec. 9—The Portland mill reports 11,800 tons treated in December{might possible be a typo for November?].
Notes/Text been Edited:
Abstracted from a somewhat longer text.Internet Source Text Link(s) {Found/Seen/Known]:
- Hathi Trust Digital Library: ⊞ Direct to Page 1195
Above Info was Last Updated on 30.10.2020 (11:04:30)
Above Info was First Seen 30.03.2019
Type/Category of Info:
General Mining NewsInfo Source From:
The Engineering and Mining Journal. Volume: 92 [XCII], Issue No. 26Info Publication Date:
December 23, 1911Info found on page:
1245Info Title:
Golden Cycle Mill Charges, Adopted From Portland Mill Open Rates The Portland company's open rates, which have been adopted by the Golden Cycle company, are as follows:
Ore up to $10 per ton, freight and treatment charges, $4
$10 to $15, $5.25
$15 to $20, $6
$20 to $25, $6.50
$25 to $30, $7
$30 to $40, $7.50
$40 to $60, $8.50
$60 to $100, $8.75
$100 to $150, $9.75
$150 to $200, $10.75
$200 to $250, $11.75
above $250, $12.75.
It is rumored that on Jan. 1 there will be some change in both the open and contract rates.
Ore up to $10 per ton, freight and treatment charges, $4$10 to $15, $5.25$15 to $20, $6$20 to $25, $6.50$25 to $30, $7$30 to $40, $7.50$40 to $60, $8.50$60 to $100, $8.75$100 to $150, $9.75$150 to $200, $10.75$200 to $250, $11.75above $250, $12.75. It is rumored that on Jan. 1 there will be some change in both the open and contract rates.Internet Source Text Link(s) {Found/Seen/Known]:
- Hathi Trust Digital Library: ⊞ Direct to Page 1245
Above Info was Last Updated on 30.10.2020 (11:04:30)
Above Info was First Seen 31.03.2019
Type/Category of Info:
General Mining NewsInfo Source From:
The Mining and Scientific Press. Volume: 107 [CVII], Issue No. 2Info Publication Date:
July 12, 1913Info found on page:
72Info Title:
Portland Mill, Colorado City Production; June 1913 According to local statistics, the following Cripple Creek mill gold production was:
Name
Tons.
Av. val.
Gross value.
Portland, Colorado City
9,950
22.00
218,900
NameTons.Av. val.Gross value.Portland, Colorado City9,95022.00218,900
Notes/Text been Edited:
Abstracted and somewhat rewritten slightlyAbove 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 NewsInfo Source From:
The Mining and Scientific Press. Volume: 107 [CVII], Issue No. 4Info Publication Date:
July 26, 1913Info found on page:
162Info Title:
Portland Mill Expands Its Machinery At the Portland mill, another Chilean mill is being installed driven by a motor, and the transformer station is being enlarged.
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 NewsInfo Source From:
The Mining and Scientific Press. Volume: 107 [CVII], Issue No. 6Info Publication Date:
August 9, 1913Info found on page:
241Info Title:
Portland Mill, Colorado City Production; July 1913 According to local statistics, the following Cripple Creek mill July output was:
Plant
Tons
Av. val.
Gross value.
Portland (Colorado City)
9,665
22.00
212,630
PlantTonsAv. val.Gross value.Portland (Colorado City)9,66522.00212,630Notes/Text been Edited:
Abstracted and somewhat rewritten slightlyAbove 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 NewsInfo Source From:
The Mining and Scientific Press. Volume: 107 [CVII], Issue No. 10Info Publication Date:
September 6, 1913Info found on page:
392Info Title:
Portland Mill, Colorado City Production; August 1913 According to local statistics, the following Cripple Creek mill August output was:
Plants
Ore treated tons
Av. val. per ton
Gross val.
Portland (Colorado City)
10,000
$ 22.00
$ 220,000
PlantsOre treated tonsAv. val. per tonGross val.Portland (Colorado City)10,000$ 22.00$ 220,000Notes/Text been Edited:
Abstracted and somewhat rewritten slightlyAbove 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 NewsInfo Source From:
The Mining and Scientific Press. Volume: 107 [CVII], Issue No. 15Info Publication Date:
October 11, 1913Info found on page:
590Info Title:
Portland Mill, Colorado City Production; September 1913 The reported production of the following district mill during September was as follows:
Plants
Tonnage
Av. val.
Gross val.
Portland, Colorado City
10,500
22.00
$ 231,000
PlantsTonnageAv. val.Gross val.Portland, Colorado City10,50022.00$ 231,000Notes/Text been Edited:
Abstracted and somewhat rewritten slightlyAbove Info was Last Updated on 30.10.2020 (11:04:30)
Above Info was First Seen 17.11.2019
Type/Category of Info:
General Mining NewsInfo Source From:
The Mining and Scientific Press. Volume: 107 [CVII], Issue No. 23Info Publication Date:
December 6, 1913Info found on page:
907Info Title:
Portland Mill, Colorado City Production; November 1913 The Estimated production of the following district mill during November is as follows:
Where treated
Tons
Av. value
Gross value
Portland, Colorado City
9,500
$ 22.00
$ 209,000
Where treatedTonsAv. valueGross valuePortland, Colorado City9,500$ 22.00$ 209,000
Notes/Text been Edited:
Abstracted and somewhat rewritten slightlyAbove Info was Last Updated on 30.10.2020 (11:04:30)
Above Info was First Seen 26.01.2020
Type/Category of Info:
Abstracts of Official ReportsInfo Source From:
The Mining and Scientific Press. Volume: 118 [CXVIII], Issue No. 11Info Publication Date:
March 15, 1919Info found on page:
374Info Title:
Portland Gold Mining Company Annual Report 1918 AbstractsProperty: mines and mills at Cripple Creek, Colorado.
Operating Officials:
G. M. Taylor, general manager
Fred Jones, superintendent at the mine
T. B. Crowe, superintendent at the mill
Luther Lennox, assistant
and Merrill Metallurgical Co., consulting metallurgists.
Financial Statement: the net profit in 1918 was $196,596. The balance from 1917 was $278,383, and that carried to 1919 was $127,622.
Current assets total $395,966, and liabilities $14,052.
Dividends: the total last year was $300,000, making $11,267,080 to date.
Development:
there was accomplished 8071 ft., making 63 miles in the Portland mine.
The Independence mine has 17 miles of openings.
The branch tunnel from the Roosevelt drainage-tunnel to No. 2 shaft of the Portland, at a depth of 2131 ft., was connected during the year.
At the end of 1918 the main shaft was sunk to No. 21, or the drainage-level.
Development of No. 1 vein will soon be under way.
The Lee No. 5 orebody was cut by the tunnel cross-cut, and driving is opening high-grade ore.
Generally the outlook is promising.
Production:
the Colorado Springs mill was closed on March 31, and the Victor mill on July 30, leaving the Independence in operation.
The extraction at the last named was good, but the profit was small.
Almost without exception, every improvement devised to reduce costs was immediately offset by some increase in cost of labor or supply entering into the extraction of gold.
The output was 53,887 tons (Colorado Springs) valued at $1,120,851, and 522,756 tons (Victor mills) worth $1,071,925.
The output to date is 3,949,248 tons, worth $48,773,378 gross.
Experiments were made on the tailing at Colorado Springs in an endeavor to devise a process for extracting potash therefrom. This material contains 7% K2O, and there is about 2,000,000 tons of it awaiting treatment.
Operating Officials:G. M. Taylor, general managerFred Jones, superintendent at the mineT. B. Crowe, superintendent at the millLuther Lennox, assistantand Merrill Metallurgical Co., consulting metallurgists.Financial Statement: the net profit in 1918 was $196,596. The balance from 1917 was $278,383, and that carried to 1919 was $127,622.Current assets total $395,966, and liabilities $14,052.Dividends: the total last year was $300,000, making $11,267,080 to date.Development:there was accomplished 8071 ft., making 63 miles in the Portland mine.The Independence mine has 17 miles of openings.The branch tunnel from the Roosevelt drainage-tunnel to No. 2 shaft of the Portland, at a depth of 2131 ft., was connected during the year.At the end of 1918 the main shaft was sunk to No. 21, or the drainage-level.Development of No. 1 vein will soon be under way.The Lee No. 5 orebody was cut by the tunnel cross-cut, and driving is opening high-grade ore.Generally the outlook is promising.Production:the Colorado Springs mill was closed on March 31, and the Victor mill on July 30, leaving the Independence in operation.The extraction at the last named was good, but the profit was small.Almost without exception, every improvement devised to reduce costs was immediately offset by some increase in cost of labor or supply entering into the extraction of gold.The output was 53,887 tons (Colorado Springs) valued at $1,120,851, and 522,756 tons (Victor mills) worth $1,071,925.The output to date is 3,949,248 tons, worth $48,773,378 gross.Experiments were made on the tailing at Colorado Springs in an endeavor to devise a process for extracting potash therefrom. This material contains 7% K2O, and there is about 2,000,000 tons of it awaiting treatment.Above Info was Last Updated on 30.10.2020 (11:04:30)
Above Info was First Seen 05.03.2020
Type/Category of Info:
General Mining NewsInfo Source From:
The Mining and Scientific Press. Volume: 118 [CXVIII], Issue No. 25Info Publication Date:
June 21, 1919Info found on page:
859Info Title:
Portland Mill Schedule Treatment Charges The Portland company has announced a new schedule of treatment charges on low-grade mine and dump ores, as follows:
Up to $3 value, $2.00 per ton
$3.50 at $2.25 per ton
$4 at $2.50 per ton
$4.50 at $2.65 per ton
$5 at $2.75 per ton.
Up to $3 value, $2.00 per ton $3.50 at $2.25 per ton $4 at $2.50 per ton $4.50 at $2.65 per ton $5 at $2.75 per ton.Above Info was Last Updated on 30.10.2020 (11:04:30)
Above Info was First Seen 07.03.2020
Type/Category of Info:
General Mining NewsInfo Source From:
The Mining and Scientific Press. Volume: 120 [CXX], Issue No. 10Info Publication Date:
March 6, 1920Info found on page:
349Info Title:
Portland Gold Mining Co. Junks Two Mills Its announced that the Portland Gold Mining Co. has abandoned two of its large mills and that these plants have been sold to junk-dealers, which lends to give one a pessimistic idea regarding the future of the Cripple Creek district.
The 600-ton mill at the mine was abandoned at the time the 1500-ton Independence Mill was completed about two years ago.
The 800-ton plant at Colorado City has also been idle for some time.
Before the abandonment of these mills much of their machinery was placed in the new mill at Victor.
The 600-ton mill at the mine was abandoned at the time the 1500-ton Independence Mill was completed about two years ago.The 800-ton plant at Colorado City has also been idle for some time. Before the abandonment of these mills much of their machinery was placed in the new mill at Victor.
Notes/Text been Edited:
Abstracted and slightly rewritten from source text.Above Info was Last Updated on 30.10.2020 (11:04:30)
Above Info was First Seen 24.02.2020
Type/Category of Info:
Abstracts of Official ReportsInfo Source From:
The Mining and Scientific Press. Volume: 120 [CXX], Issue No. 14Info Publication Date:
April 3, 1920Info found on page:
511Info Title:
Portland Gold Mining Co. ReportTHE PORTLAND GOLD MINING CO.
Report for the year ending December 31, 1919.
Property: Portland and Independence mines and the Independence mill in the Cripple Creek district, and the Portland Mill at Colorado Springs.
Operating Officials: George M. Taylor, general manager; Fred Jones, mining engineer; Thomas B. Crowe and J. M. Tippett, metallurgical engineers.
Financial Statement: Gross value of ore mined and shipped, $1,272,720; proceeds from Independence mill, $513,877; miscellaneous revenue, $6293; cost of mining and milling, $1,502,600; net profit from operation, $230,290
Dividends: $240,000 during 1919; total to date, $11,497,080.
Development: The mines have been opened a depth of 2300 ft., where a station and pumping equipment has been completed. Good ore is being blocked out on the 20th and 21st levels.
Production: 373,192 tons of ore was produced during 1919.
Report for the year ending December 31, 1919.Property: Portland and Independence mines and the Independence mill in the Cripple Creek district, and the Portland Mill at Colorado Springs.Operating Officials: George M. Taylor, general manager; Fred Jones, mining engineer; Thomas B. Crowe and J. M. Tippett, metallurgical engineers.Financial Statement: Gross value of ore mined and shipped, $1,272,720; proceeds from Independence mill, $513,877; miscellaneous revenue, $6293; cost of mining and milling, $1,502,600; net profit from operation, $230,290Dividends: $240,000 during 1919; total to date, $11,497,080.Development: The mines have been opened a depth of 2300 ft., where a station and pumping equipment has been completed. Good ore is being blocked out on the 20th and 21st levels.Production: 373,192 tons of ore was produced during 1919.Above Info was Last Updated on 30.10.2020 (11:04:30)
Above Info was First Seen 24.02.2020
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