Land and mobile f-m stations at Sunlight and Tecumsen mines of Sunlight Coal Co. and Tecumseh Coal Corp, of Boonville, Ind, provide quick contact between offices, shovels and supervisors in autos; 20 mi range.
Radio phones in stripping
Coal Age
Coal Age ; 53 , n 7
1948
3 pages
Aufsatz (Zeitschrift)
Englisch
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