Excerpt from Illinois Mineral Industry in 1931: A Preliminary Statistical Summary and Economic Review Economic studies of the competitive conditions in the natural market area Of Illinois minerals and the position Of the State's mineral industries in that area will now be studied by the new Economics Section Of the Illi nois Geological Survey and reports will be issued from time to time. Con sumption and movements Of minerals will be emphasized. It will be helpful in the preparation Of future issues if users Of this report will Offer their criticisms and suggestions for improvement. 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.