Excerpt from Methods of Mine-Timbering There is no attempt in this Bulletin to present a complete treatise on methods of mine timbering, but simply to give consideration to those systems ordinarily used in, or adapted to, the gold mines of California. Both in the lode and deep gravel mines of this State, those systems in use have been selected from the best practice and applied in various ways according to circumstances. In collecting the material herewith presented, many mines have been visited and the details of timbering work noted, so that those who have not an opportunity of comparing methods for themselves may be enabled to learn the practice of others. It has been thought proper also to give some detailed account of systems of mine timbering used in other States where extensive ore-bodies are worked, since these are adapted to use here under corresponding conditions. 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.