F. T. Lee J. H. Scott R. D. Carroll R. T. Hurr D. B. Richards F. A. Mattei B. E. Hartmann J. F. Abel Jr. Charles Sherwood Robinson 1974 <p>No abstract available.</p> application/pdf 10.3133/pp815 en U.S. Government Printing Office Engineering geologic, geophysical, hydrologic, and rock-mechanics investigations of the Straight Creek Tunnel site and pilot bore, Colorado reports