The Elements Of Mining Engineering Blowpiping Mineralogy Assaying Geology Prospecting Place And Hydraulic Mining PDF Download

Excerpt from A Treatise on Prospecting: Blowpiping, Mineralogy, Assaying, Geology, Prospecting, Placer and Hydraulic Mining The gaseous elements are hydrogen, oxygen, nitrogen, argon, chlorine, and uorine. The first three were for merly called fixed gases, as they were supposed to remain in the gaseous state under all conditions, but in the last few years all of them, even hydrogen, the lightest, have been reduced to the form of liquids by the use of enormous pressures and very low temperatures, so that the term has lost its significance and is rapidly falling into disuse. 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."