TY  - BOOK
AU  - Dunrud,C.Richard
ED  - United States
TI  - Engineering geology applied to the design and operation of underground coal mines
U1  - 622.334 21st ed.
PY  - 1998///.
CY  - Washington: , Denver, CO
PB  - U.S. G.P.O., , For sale by U. S. Geological Survey, Information Services
KW  - Coal
KW  - Geology
KW  - Coal mines and mining
KW  - Engineering geology
KW  - Ground control (Mining)
N1  - Also available via Internet from the USGS web site. Address as of 7/17/2008: http://pubs.er.usgs.gov/djvu/B/bull%5F2147.djvu ; current access is available via PURL; Includes bibliographical references (p. 128-134)
ER  -