Author : John A. Church
Release : 2018-03-08
Genre : Science
Kind : eBook
Book Rating : 907/5 ( reviews)

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Book Synopsis The Comstock Lode by : John A. Church

Download or read book The Comstock Lode written by John A. Church. This book was released on 2018-03-08. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Comstock Lode: Its Formation and History IT is fitting that a work on the structure of the Comstock Lode should be introduced by a description of the method employed in mining upon it. The known limits of the lode cover a space of feet, in a nearly due north and south direction (magnetic). At the time the existing mine maps were laid out, the variation of the needle in. That locality was 161} degrees east. The northern half of the lode has a direction a little more to the east than the magnetic meridian, and the southern half a strike which again is slightly more to the east than its neighbor. Great irregularities in the course occur locally, the strike varying in fact from north-east to north-west within short distances. Still the mean direction of the lode is almost coincident with the line of mag netic north. 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.