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

Authors
Marr-HE III
Source
NTIS: PB 209 009 :1-28
Link
NIOSHTIC No.
10008847
Abstract
The Bureau of Mines evaluated two drillhole 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.
Publication Date
19720101
Document Type
IH; Report of Investigation;
Fiscal Year
1972
NTIS Accession No.
PB-209009
NTIS Price
A03
Identifying No.
RI 7611
NIOSH Division
CPRC;
Source Name
NTIS: PB 209 009
State
MO;
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