TY - RPRT TI - Locations of potential interest for fracturing oil shale with nuclear explosives for in situ retorting, Piceance Creek basin, Rio Blanco County, Colorado AU - John R. Ege PY - 1967 DO - 10.3133/tei868 UR - https://pubs.usgs.gov/publication/tei868 ID - tei868 ER -