Geological Structure Of The Zinc Lead District Of Northwestern Illinois

Author : James C. Bradbury
Publisher : Forgotten Books
ISBN 13 : 9780266850359
Total Pages : 20 pages
Book Rating : 4.8/5 (53 download)

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Download or read book Geologic Structure Map of the Northwestern Illinois Zinc-Lead District (Classic Reprint) written by James C. Bradbury and published by Forgotten Books. This book was released on 2017-10-28 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Geologic Structure Map of the Northwestern Illinois Zinc-Lead District The structure contour maps are available on two scales. A single map a scale of 2 inches to the mile accompanies this report as plate 1. It includ structure contours and locations of known zinc mines and deposits. A set c map sheets (see fig. A scale of 500 feet to the inch, showing all datun points used in drawing contours, is available for inspection at the Survey's fices in Urbana. Black-line ozalid prints of single sheets or of the comple1 set of these maps are available at nominal cost. The datum points include 1 of the prospect holes drilled since the early l9oo's and help to indicate the ily drilled areas where further prospecting would not be practical. 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.