Excerpt from Features of Producer-Gas Power-Plant Development in Europe The analyzing and testing of mineral fuels, as carried on by the United States Geological Survey included trials of coal, lignite, and peat in a gas producer. These tests were made in connection with steaming and other tests, the object of the investigation being to find out in what ways the mineral fuels in the United States could be utilized most efficiently, and by what means deposits of low - grade fuel that were lying undeveloped or were being wasted could be made of immediate or prospective importance as assets of the nation's mineral wealth. The tests of fuels for producer-gas manufacture began in 1904 and were continued by the United States Geological Survey up to July 1, 1910, on which date all of the fuel-testing work being carried on by the Survey was transferred by act of Congress to the Bureau of Mines. Results of some of the producer - gas tests made before (that date have been given in the Geological Survey publications listed at the end of this report; results of other tests will be given in bulletins to be issued by the Bureau of Mines. 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.