RI 7611 Evaluation Of A Radioisotopic X-Ray Drill-Hole Probe - Delineation Of Lead Ores
- Organization:
- The National Institute for Occupational Safety and Health (NIOSH)
- Pages:
- 31
- File Size:
- 9986 KB
- Publication Date:
- Jan 1, 1972
Abstract
The Bureau of Mines evaluated two drill-hole probes for the delineation of Missouri lead ores. The battery-powered, portable instruments, weighing less than 30 pounds, were designed for logging holes of 1.8 inches in diameter or larger. These probes have dual scintillation detectors, balanced filters with a pass band for lead Ka radiation, and a cobalt-57 source of radiation. The results of field tests in Missouri confirm laboratory tests indicating that probe response can be correlated to lead ore grade using counting times of 10 seconds or less at any selected depth in the hole.
Citation
APA: (1972) RI 7611 Evaluation Of A Radioisotopic X-Ray Drill-Hole Probe - Delineation Of Lead Ores
MLA: RI 7611 Evaluation Of A Radioisotopic X-Ray Drill-Hole Probe - Delineation Of Lead Ores. The National Institute for Occupational Safety and Health (NIOSH), 1972.