Excerpt from Proceedings of the Coal Mining Institute of America, Pittsburgh, Pa, 1907 Again: Has the loss in mining been taken into considera tion? If not, this would materially reduce the period estimated as being the life of the coal fields. There is much uncertainty as to what per cent. Of loss in mining is, and I fear it is going to be much greater than suspected. We often hear the statement made that 95 per cent. Of the coal area now under operation is being recovered. I think this statement is probably far re moved from the truth. I will grant that at some Operations 95 per cent. Of the coal is, perhaps, being recovered, but there cer tainly are cases, even now, where 75 per cent. Is not being gotten. The various estimates referred to are certainly of great interest and value, and should be reminders that the coal seams of this State, and of all the coal bearing States, should be most care fully mined, and that no losses should be allowed that can pos sibly be avoided in mining the coal and removing it from the position it has occupied since its formation. I think some papers on these lines would not be amiss and would suggest that some one volunteer to take up this work for presentation at our winter meeting. 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.