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 …
Sep 11, 2012
Data
… of 25 m thick slices in boreholes completed within the …
Dec 31, 1963
Earth Sciences Report
… in 1961 chiefly by means of boreholes spaced at 2-mile …