OFR-116-78 Guidelines For Installation, Maintenance And Inspection Of Mine Telephone Systems
- Organization:
- The National Institute for Occupational Safety and Health (NIOSH)
- Pages:
- 53
- File Size:
- 14451 KB
- Publication Date:
- Jan 1, 1975
Abstract
This final report reviews installation, maintenance and inspection of mine pager telephone installations. A Technical Handbook was developed and distributed. Certain commercial telephone test equipment was modified and a tone source and switching circuit were developed for use in the testing of mine pager phone systems. Descriptions are included of the modifications to a commercial test set and of a tone source/ switching unit.
Citation
APA: (1975) OFR-116-78 Guidelines For Installation, Maintenance And Inspection Of Mine Telephone Systems
MLA: OFR-116-78 Guidelines For Installation, Maintenance And Inspection Of Mine Telephone Systems. The National Institute for Occupational Safety and Health (NIOSH), 1975.