TY - RPRT TI - Preliminary report on the geology and geophysics of drill hole UE25a-1, Yucca Mountain, Nevada Test Site AU - Richard W. Spengler AU - D. C. Muller AU - R.B. Livermore PY - 1979 DO - 10.3133/ofr791244 UR - https://pubs.usgs.gov/publication/ofr791244 ID - ofr791244 ER -