67325955
9781378388884
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Sawyer, Arthur Robert is the author of 'Accidents in Mines in the North Staffordshire Coalfield Arising from Falls of Roof and Sides : Their Causes, and the Means of Diminishing Their Frequency: with Detailed Sections of the Workable Seams and an Account of the System of Timbering in Vogue', published 2018 under ISBN 9781378388884 and ISBN 1378388887.
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