OPENCAST COAL MINING: EQUIPMENT. A FOWLER CRAWLER TRACTOR, POWERED BY A MEADOWS 150 B.P.H. DIESEL ENGINE AND EQUIPPED WITH A SPECIALLY DESIGNED BLAW KNOW CABLE ANGLEDOZER, AT WORK AT AN OPENCAST COAL SITE IN ENGLAND.
10/1957
20150000013 - 0074
2013_004051_BO
ZZZ. 72062.
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Central Office of Information London Collection, courtesy of National Archives of Singapore