Backfilling Problem in the Anthracite Region as it Relates to Conservation of Anthracite and Prevention of Subsidence PDF Download
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Author: Simon Harry Ash
Publisher:
ISBN:
Category : Anthracite coal
Languages : en
Pages : 22
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Book Description
Federal participation in a cooperative "backfilling" program to prevent surface cave-ins in the anthracite region of Pennsylvania is recommended in this report, which describes a plan for filling worked-out underground areas with waste or other material. Presents the various systems of backfilling and the technical problems involved. Bibliography included
Author: Simon Harry Ash
Publisher:
ISBN:
Category : Anthracite coal
Languages : en
Pages : 22
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Book Description
Federal participation in a cooperative "backfilling" program to prevent surface cave-ins in the anthracite region of Pennsylvania is recommended in this report, which describes a plan for filling worked-out underground areas with waste or other material. Presents the various systems of backfilling and the technical problems involved. Bibliography included
Author: Ralph H. Whaite
Publisher:
ISBN:
Category : Mining engineering
Languages : en
Pages : 558
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Author:
Publisher:
ISBN:
Category : Mineral industries
Languages : en
Pages : 764
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![Report of Investigations. [no.2002 to No.7380] PDF](https://books.google.com/books/content/images/frontcover/kuVTRxrmk0AC?fife=w80-h100)
Author:
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ISBN:
Category : Mineral industries
Languages : en
Pages : 874
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Author:
Publisher:
ISBN:
Category : Mines and mineral resources
Languages : en
Pages : 642
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Author:
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 540
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Author: United States. Bureau of Mines
Publisher:
ISBN:
Category :
Languages : en
Pages : 658
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Author:
Publisher:
ISBN:
Category : Mines and mineral resources
Languages : en
Pages : 630
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Author: Robert S. Sanford
Publisher:
ISBN:
Category : Manganese
Languages : en
Pages : 1148
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Author: Earl L. Fosse
Publisher:
ISBN:
Category : Copper ores
Languages : en
Pages : 180
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