Economic Mining. A practical handbook for the miner, the metallurgist, and the merchant
A practical handbook on mining and ore treatment by Charles George Warnford Lock, published in London by E. & F. N. Spon in 1895 for miners, metallurgists and metal merchants. Line engravings give plan and sectional views of furnaces, classifiers, buddles and jigs, with lettered reference keys and scale bars, useful as technical diagram stock and cutaway machinery drawing.
