The Sydney Coal Field and Longwall Operations in Dominion No. 12 Colliery

A short description of mining practice in the Sydney coal field in general is followed by a discussion of the operations in the No. 12 colliery of the Dominion Coal Company, Limited, as being typical of the trend in operating methods obtaining throughout the field . Development of longwall mining to the present system of three walls in line is outlined, together with a summary of the cycle of operations involved in systematic operation.
Keywords: Coal, Collieries, colliery, Dominion Coal Company, longwall, Old Sydney, The Sy dney Coal Field, Haulage, Mine, Mines, mining, Operation, Roadways
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