IC 8864 The Relation Of Geology To Mine Roof Conditions In The Pocahontas No. 3 Coalbed
- Organization:
- The National Institute for Occupational Safety and Health (NIOSH)
- Pages:
- 11
- File Size:
- 3497 KB
- Publication Date:
- Jan 1, 1981
Abstract
Bureau of Mines studies of mine roof fall problem in the Pocahontas No. 3 Coalbed of southern West Virgania and southwestern Virginia have established that type and sequence of rock are significant factors in roof competence. The poorest conditions occur where the immediate roof consists of slump structures and slickensided rock. The best conditions occur where the roof consists of a sequence that coarsens upward from shale to massive sandy shale. A small manual of color photographs of rock types was devised to aid in identifying drill cores. Proper identifications should enhance the prediction of areas of potential roof problems in advance of mining.
Citation
APA: (1981) IC 8864 The Relation Of Geology To Mine Roof Conditions In The Pocahontas No. 3 Coalbed
MLA: IC 8864 The Relation Of Geology To Mine Roof Conditions In The Pocahontas No. 3 Coalbed. The National Institute for Occupational Safety and Health (NIOSH), 1981.