IC 8159 Methods And Costs Of Rock Drilling At The Silver Summit Mine, Hecla Mining Co., Shoshone County, Idaho
- Organization:
- The National Institute for Occupational Safety and Health (NIOSH)
- Pages:
- 23
- File Size:
- 5726 KB
- Publication Date:
- Jan 1, 1963
Abstract
Drilling practices at the Silver Summit mine in Shoshone County, Idaho, and the steps taken to increase drilling efficiency are described for the 1952 to 1958 operating period. Mining and development methods are outlined, and drilling equipment and practice are discussed. Cost and performance data include drilling time, bit duty, steel failure, drill repair, and compressed-air consumption. Steps taken to increase drilling efficiency and decrease costs are described, including modifications of bit design, new procedures for drill-rod fabrication and new processes for completing certain drill-machine repairs.
Citation
APA: (1963) IC 8159 Methods And Costs Of Rock Drilling At The Silver Summit Mine, Hecla Mining Co., Shoshone County, Idaho
MLA: IC 8159 Methods And Costs Of Rock Drilling At The Silver Summit Mine, Hecla Mining Co., Shoshone County, Idaho. The National Institute for Occupational Safety and Health (NIOSH), 1963.