IC 7223 Multiple-Shift Mechanical Mining In Some Bituminous-Coal Mines - Progress Report 4. Extraction Of Pillars With Mechanized Equipment
- Organization:
- The National Institute for Occupational Safety and Health (NIOSH)
- Pages:
- 79
- File Size:
- 27683 KB
- Publication Date:
- Jan 1, 1942
Abstract
This paper is the fourth of a series5/ that describes some methods and practices of mining coal mechanically where operations are conducted on more than one shift. Many inquiries have been received regarding methods of extracting pillars with mechanized equipment, and this paper deals primarily with this phase of mechanical mining. Some of the questions that have been asked are:
Citation
APA: (1942) IC 7223 Multiple-Shift Mechanical Mining In Some Bituminous-Coal Mines - Progress Report 4. Extraction Of Pillars With Mechanized Equipment
MLA: IC 7223 Multiple-Shift Mechanical Mining In Some Bituminous-Coal Mines - Progress Report 4. Extraction Of Pillars With Mechanized Equipment. The National Institute for Occupational Safety and Health (NIOSH), 1942.