Measuring and testing – Specific gravity or density of liquid or solid
Patent
1988-06-28
1990-03-06
Noland, Tom
Measuring and testing
Specific gravity or density of liquid or solid
73433, 73 1R, 250269, 378 55, 378 56, G01N 924, G01N 902
Patent
active
RE0331767
ABSTRACT:
A method for determining the density of coal or other bulk material in a stockpile includes boring a calibration hole into the pile and collecting at least a portion of the cuttings thus obtained into a container. A series of readings are taken within the container with a nuclear depth-density gauge, and the weight of the cuttings and container volume is measured. The measured weight and volume are compared with the gauge readings to calibrate the gauge. A test hole is then bored substantially to the bottom of the stockpile, and a section of steel casing is inserted and partially pressed into the hole. A second section of casing is attached to the first and similarly pressed into the hole. In this manner, casing is extended the full depth of the hole. Readings are then taken at various depths therein with the nuclear gauge. From the data thus obtained, average density throughout the pile is determined.
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Cowherd David C.
DeWitte Jerry L.
Taylor Kenneth A.
Whitaker William C.
Wolfe Daniel S.
Bowser-Morner, Inc.
Noland Tom
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