Excerpt from Powdered Goal as a Fuel Operating Cost of Powdered Coal Plant with Pneumatic Distributing System Fixed Charges: Interest at 5 per cent of 50 Depreciation at 10 per cent Taxes and insurance Operation Coal, 3900 tons at Labor, 1 operator and two assistants Unloading coal at per car Electrical current for motors Repairs, 2 per cent of cost. Summary First Cost. Yearly Operation. Fuel oil plant. Water gas plant. Powdered coal plant (screw Powdered coal plant (pneumatic). 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.