Excerpt from Elements of MiningCoal mining has been included with metal mining, since while there are differences in the mining conditions the underlying principles are the same and one form of mining affords a contrast to the other. The rela tion of geology to mining has been brought out and accentuated wherever appropriate.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.