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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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204:) 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
189:, 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
90:. 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
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59:. 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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63:. The company was bought by Louisiana Land and Exploration in 1977.
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U. S. Congress, Office of
Technology Assessment (September 1988).
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102:. 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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331:: U.S. Government Printing Office. p. 461.
424:Defunct mining companies of the United States
419:Copper mining companies of the United States
292:: CS1 maint: location missing publisher (
261:: CS1 maint: location missing publisher (
27:, Champion Mine. Size 6.6 x 3.8 x 3.2 cm.
373:Bureau of Mines - Minerals yearbook 1988
319:United States Department of the Interior
159:. The White Pine mine contained a large
151:at the south end of the copper belt, at
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282:. Houghton, Michigan. pp. 593–595.
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345:Copper: Technology and Competitiveness
110:owned nearly all the mines north of
439:Defunct companies based in Michigan
352:: U.S. Government Printing Office.
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444:1977 disestablishments in Michigan
223:Copper Country Strike of 1913-1914
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35:Copper Range railroad boxcar, 1973
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307:U. S. EPA mine site visit – 1992
88:Copper Range Consolidated Company
384:The Mineral Industry of Michigan
108:Calumet and Hecla Mining Company
321:; U.S. Bureau of Mines (1968).
67:Amygdaloid native copper mining
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193:Louisiana Land and Exploration
125:orebodies in the flow tops of
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279:The Copper Handbook, Volume 8
244:The Copper Handbook, Volume 2
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276:Stevens, Horace J. (1908).
241:Stevens, Horace J. (1902).
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429:Houghton County, Michigan
218:Copper mining in Michigan
47:-mining company in the
197:Echo Bay Mines Limited
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73:Copper Range Railroad
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153:White Pine, Michigan
41:Copper Range Company
251:. pp. 153–155.
139:property, in 1967.
434:Mining in Michigan
400:2008-05-16 at the
395:hudbayminerals.com
249:Houghton, Michigan
61:Houghton, Michigan
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100:Albert C. Burrage
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96:Thomas W. Lawson
81:Baltic, Michigan
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167:-impregnated
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57:United States
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25:native copper
23:on dendritic
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112:Portage Lake
104:Portage Lake
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43:was a major
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177:Precambrian
127:Precambrian
413:Categories
229:References
187:Dashaveyor
165:chalcocite
161:stratiform
123:stratiform
288:cite book
257:cite book
169:siltstone
398:Archived
212:See also
163:body of
53:Michigan
175:of the
21:Cuprite
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130:basalt
45:copper
173:shale
354:ISBN
294:link
263:link
171:and
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39:The
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