Accidents involving canting-out of roof supports; conclusions drawn from available evidence; roof control in longwall workings and in bord and pillar workings; other accidents discussed. Extracts from second report of Durham advisory committee and Northumberland advisory committee. Before North of England Inst Min and Mech Engrs. (See also - n 4325 Nov 19 1943 p 621-5; Iron and Coal Trades Rev v 147 n 3950 Nov 12 1943 p 750)
Falls of ground
Colliery Guardian
Colliery Guardian ; 167 , n 4326
1943
3 pages
Aufsatz (Zeitschrift)
Englisch
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