TY - RPRT TI - Interim report on geologic investigations of the U12b tunnel system, Nevada Test Site, Nye County, Nevada AU - D.D. Dickey AU - W.L. Emerick PY - 1961 DO - 10.3133/ofr6141 UR - https://pubs.usgs.gov/publication/ofr6141 ID - ofr6141 ER -