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Evaluation of a radioisotopic x-ray drill hole probe: delineation of lead ores

Technical Report ·
OSTI ID:5374292
;
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 K..cap alpha.. 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.
Research Organization:
Bureau of Mines, Washington, D.C. (USA)
OSTI ID:
5374292
Report Number(s):
BM-RI-7611
Country of Publication:
United States
Language:
English

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Related Subjects

440105 -- Radiation Instrumentation-- Radiometric Instruments-- (-1987)
440400* -- Well Logging Instrumentation
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
47 OTHER INSTRUMENTATION
BETA DECAY RADIOISOTOPES
BOREHOLES
CAVITIES
COBALT 57
COBALT ISOTOPES
DAYS LIVING RADIOISOTOPES
ELECTRON CAPTURE RADIOISOTOPES
EQUIPMENT
EVALUATION
INTERMEDIATE MASS NUCLEI
ISOTOPES
LEAD ORES
NUCLEI
ODD-EVEN NUCLEI
ORES
PERFORMANCE
RADIOACTIVITY LOGGING
RADIOISOTOPES
WELL LOGGING
X-RAY FLUORESCENCE LOGGING