TY  - BOOK
AU  - Woodruff, Seth D.
TI  - METHODS OF WORKING COAL AND METAL MINES
U1  - 622 
PY  - 1966///
CY  - Oxford, New York
PB  - Pergamon Press
KW  - Mining Engineering
KW  - Coal Mines And Mining
N1  - Contents : V. 1. Theory And Application Of Rock Mechanics To Roof Control And Support Problems -- V. 2. Ground Support Methods -- V. 3. Planning And Operations; Includes Bibliographies
ER  -