[PDF] Comparison Of Physical Conditions In British And American Coal Mines Full Read

Language: en
Pages: 132

Authors: Frederick Gale Tryon

Categories: Coal mines and mining

Type: BOOK - Published: 1926 - Publisher:

Language: en
Pages: 776

Authors:

Categories: Coal trade

Type: BOOK - Published: 1926 - Publisher:

Language: en
Pages: 298

Authors: László Rostás

Categories: Labor productivity

Type: BOOK - Published: 1948 - Publisher: CUP Archive

Language: en
Pages: 1134

Authors: United States. Bureau of Mines

Categories: Mines and mineral resources

Type: BOOK - Published: 1936 - Publisher:

Language: en
Pages: 134

Authors: George W. Strasser

Categories: Coal trade

Type: BOOK - Published: 1936 - Publisher: