Excerpt from Illinois Mineral Industry in 1935: A Preliminary Statistical Summary and Economic Review Review of production. - Coal production rose from per cent of the national total in 1934 to per cent of the national total in 1935 (table The high point of Illinois percentage of the total was per cent in 1921, while the low point occurred in 1927 when it was per cent. This, however, was an abnormal year due to suspension of mining operations during' part of the year During the period 1919 to 1935 the average share by Illinois of the total coal demand was per cent. 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.