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obtain a stock exchange listing, but it failed due to a variety of factors, including the move of mining into areas in which royalties had to be paid e.g. to AMAX in the south west area, the general decrepitude of the mining machinery and not least the start of a general crushing of the pillars and collapse in the centrally worked out areas, which was at least partially stopped by wrapping pillars with conveyor belt and old haulage rope to stabilize them. The employees subsequently sold Copper Range to Metall Mining
Corporation (shortly to rename itself
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215:) in 1989. After a fruitless attempt to put the mine back into profit again, Inmet closed it in 1995. Proposals to carry on mining by sulfuric acid leaching were considered but these were shelved in 1997. The mine was allowed to flood and reclamation work started. The refinery continues to operate however, and is now owned by
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in 1983. Echo Bay sold the operation to the employees in 1985 but kept part of the milling circuit. In this transaction 70% of the shares went into an ESOP (Employees Stock Option Plan) and the remaining 30% were held by Mine
Management Resources. It was at this time that an attempt was made to
200:, a high speed transportation system, and what was at the time the world's largest hard rock tunneling machine to be sold to a mining company. It was also one of the earlier mines to use rubber tired mining equipment on a large scale.
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Formation. The ore also contained native copper, usually as individual grains but often as sheets several feet long. The White Pine mine produced copper until 1995.
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lava flows. The ore horizons are known locally as amygdaloids, after the amygdaloidal-shaped gas bubbles in the lavas that filled with minerals.
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In its early days the company was known for its use of advanced mining and transport systems (not all of which worked very well) including the
101:. Copper Range Consolidated used its new shares to get control of more copper mining companies by stock swaps. It gained half the stock in the
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In 1901, the Copper Range
Company, prevented by Michigan law from issuing more shares of stock, incorporated a new entity in New Jersey, the
70:. It began as the Copper Range Company in the late 19th century as a holding company specializing in shares in the copper mines south of
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Minerals
Yearbook: Volume I – II; Metals, Minerals & Fuels; 1967 (Minerals Yearbook, Volume I-II)
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Copper Range spun off its wholly owned subsidiary White Pine Copper Co., which in 1955 opened the
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and the Baltic Mining
Company. The Copper Range Railroad served much of the southern part of the
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U. S. Congress, Office of
Technology Assessment (September 1988).
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113:. Copper Range came to own nearly all the copper mines south of
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Copper Range shut down the
Champion mine, its last operating
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bought Copper Range in 1977, then sold the operation to
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The Copper Range properties mined copper in the form of
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Copper Range controlled through share ownership the
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435:Defunct mining companies of the United States
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430:Copper mining companies of the United States
303:: CS1 maint: location missing publisher (
272:: CS1 maint: location missing publisher (
38:, Champion Mine. Size 6.6 x 3.8 x 3.2 cm.
384:Bureau of Mines - Minerals yearbook 1988
330:United States Department of the Interior
170:. The White Pine mine contained a large
162:at the south end of the copper belt, at
293:. Houghton, Michigan. pp. 593–595.
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356:Copper: Technology and Competitiveness
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121:owned nearly all the mines north of
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363:: U.S. Government Printing Office.
455:1977 disestablishments in Michigan
234:Copper Country Strike of 1913-1914
46:Copper Range railroad boxcar, 1973
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318:U. S. EPA mine site visit – 1992
99:Copper Range Consolidated Company
395:The Mineral Industry of Michigan
119:Calumet and Hecla Mining Company
332:; U.S. Bureau of Mines (1968).
78:Amygdaloid native copper mining
204:Louisiana Land and Exploration
136:orebodies in the flow tops of
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290:The Copper Handbook, Volume 8
255:The Copper Handbook, Volume 2
287:Stevens, Horace J. (1908).
252:Stevens, Horace J. (1902).
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440:Houghton County, Michigan
229:Copper mining in Michigan
58:-mining company in the
208:Echo Bay Mines Limited
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84:Copper Range Railroad
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18:Baltic Mining Company
164:White Pine, Michigan
52:Copper Range Company
262:. pp. 153–155.
150:property, in 1967.
445:Mining in Michigan
411:2008-05-16 at the
406:hudbayminerals.com
260:Houghton, Michigan
72:Houghton, Michigan
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54:was a major
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188:Precambrian
138:Precambrian
424:Categories
240:References
198:Dashaveyor
176:chalcocite
172:stratiform
134:stratiform
299:cite book
268:cite book
180:siltstone
409:Archived
223:See also
174:body of
64:Michigan
186:of the
32:Cuprite
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141:basalt
56:copper
184:shale
365:ISBN
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