Hydraulic Crawler Drill Production Rate Outstrips Air Drills at North Carolina Open-Pit Mine
- Organization:
- The American Institute of Mining, Metallurgical, and Petroleum Engineers
- Pages:
- 1
- File Size:
- 120 KB
- Publication Date:
- Jan 9, 1978
Abstract
One of the first all-hydraulic crawler drills in service at a US open-pit mine has significantly exceeded the penetration rates of comparable pneumatic crawler rigs, according to Atlas Copco Inc. Overall production with the hydraulic unit has been double that of pneumatic crawlers in use. The installation is at the Foote Mineral Co. surface mine at Kings Mountain, N.C., where the company is engaged in mining spodumene, a combination of lithium, aluminum, and silicates. The ore is found in pegmatite dikes, a tough and abrasive host rock with compressive strength of tip to 5800 kPa (40,000 psi).
Citation
APA: (1978) Hydraulic Crawler Drill Production Rate Outstrips Air Drills at North Carolina Open-Pit Mine
MLA: Hydraulic Crawler Drill Production Rate Outstrips Air Drills at North Carolina Open-Pit Mine. The American Institute of Mining, Metallurgical, and Petroleum Engineers, 1978.