Results: 1 - 4 of 4
Dec 31, 1966
Earth Sciences Report
… complete logs only of the 40 boreholes that intercepted coal … locations of the remaining 160 boreholes were only briefly noted. … of complete logs of all 200 boreholes drilled by the Research …
Oct 25, 2018
Report
… tests collected from nearby boreholes that targeted the …
Jun 30, 2000
Geo-Note
… logs run in uncased sections of boreholes drilled in areas of thick …
Dec 31, 1963
Earth Sciences Report
… in 1961 chiefly by means of boreholes spaced at 2-mile …