Walker, Sydney F. — ELECTRICITY IN MINING.

Harper & Brothers, London and New York 1907. 1st Ed. xx + 385pp. + [i] + [vi] adverts. Frontis., 31 plates from photos., 163 figures. Ex.-Sheffield University lib. with label to front pastedown and sm. ink stamps to verso of plates and title page, ownership signature, some very light marginal age toning, f.e.ps. lightly browned, original gilt lettered dark teal cloth, rubbed to extremities and with sl. wear at corners and joints, head and tail of spine sl. bumped with faint accession nos. towards tail.