Transactions of the American Institute of Mining, Metallurgical and Petroleum Engineers Volume 55

by

Write The First Customer Review

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1896 Excerpt: ...of the first concentrate and the percentage of middlings to be re-crushed and re-separated can be accurately controlled. There was no such discriminating power in the earlier types of separators; and, although a part of the ore obtained from a first separation might again pass through a second and sometimes a third ...