RI 6378 Experimental Longwall Mining in a Pennsylvania Anthracite Mine (in Two Parts). 1. Use of Yielding Steel Props
- Organization:
- The National Institute for Occupational Safety and Health (NIOSH)
- Pages:
- 34
- File Size:
- 5352 KB
- Publication Date:
- Jan 1, 1964
Abstract
In an effort to establish a highly productive mechanized mining system
for anthracite beds pitching between 10 ° and 20 ° , for which conventional
mobile equipment is not adaptable , the Bureau carried out an experiment in
longwall mining using an Anderton- type drum cutter loader and friction - type
yielding steel roof supports . The roof- support system proved to be inadequate
for breaking the overhanging roof at the break line supports , with the result
that the roof broke over the solid coal . The accompanying subsidence
destroyed the continuity of the roof in the work area , and the project was
discontinued .
Citation
APA: (1964) RI 6378 Experimental Longwall Mining in a Pennsylvania Anthracite Mine (in Two Parts). 1. Use of Yielding Steel Props
MLA: RI 6378 Experimental Longwall Mining in a Pennsylvania Anthracite Mine (in Two Parts). 1. Use of Yielding Steel Props. The National Institute for Occupational Safety and Health (NIOSH), 1964.