Results: 1 - 3 of 3
Dec 31, 1979
Open File Report
… m) thick and with a cumulative thickness in excess of 6 ft (1.8 … because of the large overburden thickness. Near-surface Carbon and …
Dec 31, 1989
Open File Report
… seams have an average aggregate thickness of 17.5 meters and are …
Dec 31, 1989
Open File Report
… seams have an average aggregate thickness of 24 metres and are …