Deere / Northern Appalachia Southern Appalachia Midwest CO / Pittsburgh Research Laboratory / CMRR / /
Country
United States / Canada / Australia / South Africa / /
Currency
SBD / /
Facility
Strip Log Description UNIT MINE / IMMERSION TEST Mine / C. B. A. B. C. A. C. B. A. Disco / Mine Safety and Health Administration / National Institute / /
IndustryTerm
mass classification systems / damage equipment / coal mine roof classification systems / classification systems / mining / rock mass classification systems / reasonable solution / steel / /
MarketIndex
Slake Durability / Point Load / /
MusicGroup
I.D. / /
NaturalFeature
ALPS / Roof falls / /
Organization
Mine Safety and Health Administration / CMRR UCS / International Society for Rock Mechanics / National Institute for Occupational Safety and Health / /
Person
Williamson / Hudson / Virginia Illinois Basin Alabama Virginia / Christopher Mark / / /
Position
Location Author / Principal research mining engineer / Priest / Major / Research geologist / /
Development and Application of the Coal Mine Roof Rating (CMRR)