Laserfiche WebLink
4.0 LITERATURE REVIEW AND DATA COLLECTION <br />• <br />Sources of data utilized in this study included the following: <br />1. Published sources of information from public agencies <br />(i.e., U.S. Geological Survey, Colorado Geological <br />Survey, U.S. Bureau of Mines, etc.); <br />2. Papers from various-publications and-authors providing <br />data on subsidence analysis techniques, subsidence <br />monitoring, case studies in subsidence, critical reviews <br />of analytical techniques, recent developments in <br />subsidence prediction and so on (see Bibliography); <br />3. The permit revision to the Bear Coal Company, Permit No. <br />C-033-81, dated July 3, 1985 and the associated Adequacy <br />Response dated September 20, 1985. <br />• 4. Miscellaneous data files provided by Bear Coal Company <br />which included test boring logs prepared by Anchor Coal <br />Company on the subject property, miscellaneous geologic <br />data, aerial photography, topographic maps, monitoring <br />data and other miscellaneous information. <br />5. Data generated f or the on gi na 1 study f or the Mt. <br />Gunnison Mine property prepared by West Elk Coal <br />Company, a division of Atlantic Richfield. This <br />information included lithologic logs, geophysical logs, <br />and rock mechanics testing data. <br />• Much of the pertinent information collected from all these <br />sources will be found summarized throughout this report. <br />9 <br />