Deep Mining Methods, Conglomerate Mine of the Calumet and Hecla Consolidated Copper Co PDF Download
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Author: Harry Vivian
Publisher:
ISBN:
Category : Copper mines and mining
Languages : en
Pages : 56
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Book Description
This paper deals principally with the retreating method of mining as applied in the Calumet & Hecla Consolidated Copper [Companies] deep Conglomerate mine, pointing out some of the difficulties encountered in deep mining describing the particular methods used at Calumet to carry on a large-scale operation at great depth wiht a minimum hazard factor. The circular is one of a series dealing with mining methods and costs which is being prepared for and published by the United States Bureau of Mines.
Author: Harry Vivian
Publisher:
ISBN:
Category : Copper mines and mining
Languages : en
Pages : 56
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Book Description
This paper deals principally with the retreating method of mining as applied in the Calumet & Hecla Consolidated Copper [Companies] deep Conglomerate mine, pointing out some of the difficulties encountered in deep mining describing the particular methods used at Calumet to carry on a large-scale operation at great depth wiht a minimum hazard factor. The circular is one of a series dealing with mining methods and costs which is being prepared for and published by the United States Bureau of Mines.
Author: United States. Bureau of Mines
Publisher:
ISBN:
Category : Coal mine accidents
Languages : en
Pages : 0
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Book Description
This paper deals principally with the retreating method of mining as applied in the Calumet & Hecla Consolidated Copper [Companies] deep Conglomerate mine, pointing out some of the difficulties encountered in deep mining describing the particular methods used at Calumet to carry on a large-scale operation at great depth wiht a minimum hazard factor. The circular is one of a series dealing with mining methods and costs which is being prepared for and published by the United States Bureau of Mines.
Author:
Publisher:
ISBN:
Category : Mines and mineral resources
Languages : en
Pages : 962
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Author:
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ISBN:
Category :
Languages : en
Pages : 184
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Author: Daniel Harrington
Publisher:
ISBN:
Category : Coal mine accidents
Languages : en
Pages : 1206
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Author: United States. Bureau of Mines
Publisher:
ISBN:
Category :
Languages : en
Pages : 1442
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Author: Charles Freeman Jackson
Publisher:
ISBN:
Category : Mining engineering
Languages : en
Pages : 538
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Author: Charles Freeman Jackson
Publisher:
ISBN:
Category : Mining engineering
Languages : en
Pages : 306
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Author:
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ISBN:
Category : Earth sciences
Languages : en
Pages : 1320
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Author:
Publisher:
ISBN:
Category : Copper mines and mining
Languages : en
Pages : 106
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