Operations Report No. 3 – Combatting Excessive Heat Underground at Bralorne
- Organization:
- The American Institute of Mining, Metallurgical, and Petroleum Engineers
- Pages:
- 2
- File Size:
- 160 KB
- Publication Date:
- Jan 12, 1963
Abstract
In the Coast Mountains approximately 110 miles north of Vancouver, the gold mine of Bralorne- Pioneer Mines Ltd. lies at an elevation of 3500 ft. The deepest or 41 level in the mine is at an elevation of 1400 ft below sea level, and the rock temperature on this level is 122.5°F. The thermal gradient is 1 "F increase in temperature for each 67.5 ft increase in depth. The mine produces between 500 and 600 tons per clay, utilizing an adit two internal shafts, and one service shaft from surface. The Queen shaft, extending from the 26 to the 41 level, IS the deepest, and most production now comes from this area. Stoping in by cut and fill using mill tailing hydraulic backfill.
Citation
APA: (1963) Operations Report No. 3 – Combatting Excessive Heat Underground at Bralorne
MLA: Operations Report No. 3 – Combatting Excessive Heat Underground at Bralorne. The American Institute of Mining, Metallurgical, and Petroleum Engineers, 1963.