Online (PDF) Questions And Answers On Timbering Bituminous Coal Mines Download

Language: en
Pages: 36

Authors: James Washington Paul

Categories: Bituminous coal mines and mining

Type: BOOK - Published: 1928 - Publisher:

On use of lumber to support mine roof.

Language: en
Pages: 46

Authors: John Joseph Vincent Forbes

Categories: Mine timbering

Type: BOOK - Published: 1939 - Publisher:

Language: en
Pages: 840

Authors: United States. Bureau of Mines

Categories: Mineral industries

Type: BOOK - Published: 1960 - Publisher:

Language: en
Pages: 838

Authors: United States. Bureau of Mines

Categories: Mineral engineering

Type: BOOK - Published: 1960 - Publisher:

Language: en
Pages: 118

Authors: Robert Zerubabel Virgin

Categories: Mine timbering

Type: BOOK - Published: 1935 - Publisher: