Inventors:
David C. Cowherd - Centerville OH
Jerry L. DeWitte - Spring Valley OH
Kenneth A. Taylor - Dayton OH
William C. Whitaker - Xenia OH
Daniel S. Wolfe - Springfield OH
Gene A. Wolfe - Fairborn OH
Assignee:
Bowser-Morner, Inc. - Dayton OH
International Classification:
G01N 924
G01N 902
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.