Of Mr. Chance's paper on a New Method for Working Deep Coal-Beds
- Organization:
- The American Institute of Mining, Metallurgical, and Petroleum Engineers
- Pages:
- 4
- File Size:
- 145 KB
- Publication Date:
- Jan 1, 1901
Abstract
W. S. GRESLEY, Erie, Pa. (communication to the Secretary): A six-entry method of opening coal-mines is, or was a short time ago, practiced in the Connellsville coal-region; but Dr. Chance's method has a novel aspect; for while in the Connellsville region the main pillars are formed outside of two pairs
Citation
APA: (1901) Of Mr. Chance's paper on a New Method for Working Deep Coal-Beds
MLA: Of Mr. Chance's paper on a New Method for Working Deep Coal-Beds. The American Institute of Mining, Metallurgical, and Petroleum Engineers, 1901.