Laserfiche WebLink
MEMORANDUM REPORT <br /> Subsidence Inspection, Coal Basin Mines, <br /> Mid-Continent Resources, Inc. September 12 , 1980 <br /> John G. Roscoe, Mining Engineer <br /> Willard Owens Associates , Inc. <br /> Introduction: <br /> On September 12 , 1980, the land surface overlying mined <br /> portions of Mid-Continent' s No. 1 and No. 2 Mines was <br /> inspected for evidence of subsidence. The area examined <br /> is the only portion of the mined area where complete <br /> extraction of coal has taken place. Subsidence in the <br /> majority of the mine area has been prevented by the <br /> existence of pillars within the coal beds and along the <br /> crop line. <br /> The purpose of the inspection was to: <br /> 1. Determine if subsidence has occurred; if so, <br /> its nature and magnitude; if not, the likeli- <br /> hood of occurrence. <br /> 2. Aid in prediction and evaluation of future <br /> subsidence. <br /> -1- <br />