Excerpt from Production of Explosives in the United States During the Calendar Year 1920: With Notes on Mine Accidents Due to Explosives The quantity of permissible explosives sold in 1920 has never before been equaled, and the sales of black powder were, with one exception likewise larger than for any previous year. The quantity of high explosives sold in 1920, while considerably above that for 1919 and 1918, was still below normal. The reports show that practically all classes of consumers used larger quantities of explosives in 1920 than in 1919. The mining industry consumed per cent of all explosives in 1920 as com pared with per cent in 1919. The principal increase was in coal mining, an industry that ordinarily consumes over 80 per cent each of all black powder and permissible explosives and about 15 per cent of high explosives, or over half of these three classes combined. 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.

Excerpt from Production of Explosives in the United States During the Calendar Year 1919: With Notes on Coal-Mine Accidents Due to Explosives, and List of Permissible Explosives Tested to May 31, 1920 The total production (excluding exports) of explosives in the United States during the year ended December 31, 1919, according to reports that the Bureau of Mines has received from. Manufacturers, was 417,634,470pounds as compared with pounds in 1918, a decrease of pounds or 16 per cent. 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.