Author : John Joseph Vincent Forbes
Publisher :
Page : 932 pages
File Size : 11,74 MB
Release : 1939
Category : Mine timbering
ISBN :
[PDF] Some Information On Timbering Bituminous Coal Mines eBook
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Some Information on Timbering Bituminous-coal Mines, by J. J. Forbes and C. W. Owings
Author : J. J. Forbes
Publisher :
Page : 37 pages
File Size : 40,42 MB
Release : 1939
Category :
ISBN :
Some Information on Timbering Bituminous-coal Mines
Author : John Joseph Vincent Forbes
Publisher :
Page : 46 pages
File Size : 10,80 MB
Release : 1939
Category : Mine timbering
ISBN :
Questions and Answers on Timbering Bituminous Coal Mines
Author : James Washington Paul
Publisher :
Page : 36 pages
File Size : 16,66 MB
Release : 1928
Category : Bituminous coal mines and mining
ISBN :
On use of lumber to support mine roof.
A Look at the Mine-timber Market in the Appalachian Bituminous Coal Region
Author : Robert G. Knutson
Publisher :
Page : 16 pages
File Size : 41,60 MB
Release : 1970
Category : Mine timbering
ISBN :
"Do coal mine operators use many mine timbers? What are the specifications for mine timbers? Does producing mine timbers differ from producing other sawmill products? These are typical of the questions that sawmill operators in the Appalachians ask about the mine-timber market. At first glance it seems strange that they would ask such questions. After all, the mine-timber market is a traditional outlet for wood products in the Appalachians, and it would seem that all sawmill operators in the region would be familiar with the market. But this is not the case. Sawmill operators, unless they sell mine timbers, know little about the market. Even those who sell mine timbers know little about the coal industry's current and potential need for mine timbers, because they generally supply only one or two mines. This report was prepared to answer some of the questions that sawmill operators have about the rnine-timber business in the Appalachian coal region. S3
Timber Withdrawing and Devices Used for this Purpose in Some Coal Mines
Author : James Washington Paul
Publisher :
Page : 28 pages
File Size : 47,88 MB
Release : 1933
Category : Coal mines and mining
ISBN :
Costs of Mining Under Bolted Roof and Timbered Roof in Bituminous Coal Mines
Author : M. J. Ackerman
Publisher :
Page : 32 pages
File Size : 32,65 MB
Release : 1961
Category : Bituminous coal
ISBN :
Questions and Answers on Timbering Bituminous Coal Mines
Author : James Washington Paul
Publisher :
Page : 32 pages
File Size : 35,83 MB
Release : 1928
Category : Mine timbering
ISBN :
Some Suggestions on Safety in Timbering Anthracite Mines
Author : Robert Dewey Currie
Publisher :
Page : 28 pages
File Size : 34,9 MB
Release : 1939
Category : Coal mines and mining
ISBN :
A Look at the Mine-timber Market in the Appalachian Bituminous Coal Region
Author : Robert G. Knutson
Publisher :
Page : 0 pages
File Size : 28,19 MB
Release : 1970
Category : Mine timbering
ISBN :