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Mining Publication: Evaluation of Several Natural Gamma Radiation Systems - a Preliminary Study
Keywords: Chemical analysis Radiation detectors
Original creation date: January 1995
Authors: SD Maksimovic, GL Mowrey
Information Circular - January 1995
Download PDF Document (2.43 MB)
NIOSHTIC2 Number: 20023489
U.S. Department of the Interior, Bureau of Mines, Information Circular 9434, NTIS stock number: PB96-128608, 1995 :1-48
An important element of the U.S. Bureau of Mines (USBM) mining research program is the development and evaluation of reliable coal interface detection (CID) systems. Commercially available CID sensors based on natural gamma radiation (NGR) are only applicable if the immediate roof is composed of shaley material. The USBM has made numerous underground and laboratory measurements using several NGR systems approved for installation on mining machines by the Mine Safety and Health Administration. In addition, two small handheld NGR instruments were used to make comparative measurements. Underground NGR measurements in 10 different coal seams, potassium-uranium-thorium radiometric analyses on samples from 16 seams, and chemical analyses of coal and rock for correlation with NGR counts were made. Laboratory test results on the effect of airgap and sample thickness, size, and weight on the NGR measurements, as well as general results of the various NGR systems, are discussed.
Image of publication Evaluation of Several Natural Gamma Radiation Systems - a Preliminary StudyInformation Circular - January 1995
Download PDF Document (2.43 MB)
NIOSHTIC2 Number: 20023489
U.S. Department of the Interior, Bureau of Mines, Information Circular 9434, NTIS stock number: PB96-128608, 1995 :1-48
See Also
Evaluation of Sequential Extraction Procedures for Soluble and Insoluble Hexavalent Chromium Compounds in Workplace Air Samples
Field Method for the Determination of Insoluble or Total Hexavalent Chromium in Workplace Air
Geologic Factors Influencing the Gas Content of Coalbeds in Southwestern Pennsylvania
Mapping of Compositional Properties of Coal Using Isometric Log-Ratio Transformation and Sequential Gaussian Simulation - A Comparative Study for Spatial Ultimate Analyses Data
The Role of ASTM E27 Methods in Hazard Assessment: Part II - Flammability and Ignitability
A Technique for Measuring Toxic Gases Produced by Blasting Agents
Page last reviewed: November 19, 2015
Page last updated: November 19, 2015
Content source: National Institute for Occupational Safety and Health, Mining Program
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