Excerpt from Report of Progress in the Clearfield and Jefferson District of the Bituminous Coal-Fields of Western PennsylvaniaEntered, for the Commonwealth of Pennsylvania, in the year 1875, according to acts of Congress, BY J ohn B. Pearse, Secretary of the Board of Commissioners of Geological Survey, In the Office of the Librarian of Congress, at washington, D. C.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis 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.