TY - RPRT TI - Investigation of foundation problems related to heaving of soils and weathered bedrock in the Pierre Shale southwest of Denver, Colorado AU - T. C. Nichols AU - D. D. Eberl AU - R. A. Williams AU - K. W. King PY - 1991 DO - 10.3133/ofr91281 UR - https://pubs.usgs.gov/publication/ofr91281 ID - ofr91281 ER -