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Detection of Rubble Zones in Oil Shale by the Electrical Resistivity Technique.
NTIS: PB 211 951 :17 pages
Electrical resistivity surveys were conducted at three sites in Wyoming in an attempt to detect underground rubble zones in oil shale and to determine their size and resistivity contrast. The zones were detected at Rock Springs sites 4 and 5, but none were detected at Green River site 1. The resistivity of the rubble zones at sites 4 and 5 is greater than that of the surrounding rock. The zones at sites 4 and 5 are concluded to be roughly ovaloid in shape, with a horizontal diameter of 33 m and a vertical thickness of 24 m. Both rubble zones and the blasting that created them are considered to be centered at a depth of 24 m.
IH; Report of Investigation;
NTIS Accession No.
NTIS: PB 211 951
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division