Excerpt from Mineral Resources of Michigan With Statistical Tables of Production and Value of Mineral Products for 1912 and Prior Years This is the second of a series of annual statements regarding the mineral industry of the state with statistical tables of production and value of mineral product's. Under a co-operative agreement with the United States Geological Survey reports of production and value of mineral products and other items of information have been received directly from the producers, except in cases of copper, iron, pig iron and coal. 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 techlogy 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.