Download or read book Report of Investigations, Vol. 74: Part I. Illinois Mineral Industry in 1940; Part II. Historical Summary, 1919-1939 (Classic Reprint) written by Walter H. Voskuil and published by Forgotten Books. This book was released on 2018-04-27 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Report of Investigations, Vol. 74: Part I. Illinois Mineral Industry in 1940; Part II. Historical Summary, 1919-1939 Coal production responded to the stimulus of increased industrial activity with an output again around 50 million tons. 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.