Excerpt from Abstracts of Current Decisions on Mines and Mining: October, 1914, to April, 1915 This bulletin is the fourth of its kind to be published by the Bureau of Mines, the three preceding being Bulletin 61, Bulletin 79, and Bulletin 90. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This 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.