First Page | Document Content | |
---|---|---|
Date: 2012-08-30 15:56:49Mining engineering Coal mining Mechanics Rock mass classification Discontinuity Shear strength Bed Mine Safety and Health Administration Persistence Geology Geotechnical engineering Mining | Development and Application of the Coal Mine Roof Rating (CMRR)Add to Reading ListSource URL: www.cdc.govDownload Document from Source WebsiteFile Size: 265,30 KBShare Document on Facebook |