Excerpt from The Analysis of Permissible Explosives As has been noted, a large proportion of the explosives which have been placed on the bureau's permissible list are of this type, the list' on June 1, 1915, including 61 ammonium-nitrate explosives out of a total of 133 explosives; 14 other ammonium-nitrate explosives for merly on the permissible list have been withdrawn. 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 Tests of Permissible Explosives Investigations of Explosives used in Coal Mines contains the results of tests of 17 permissible explosives tested prior to May 15, 1909. A copy of the test requirements and the names of explosives on the per missible list dated March 1, 1913, are appended to this bulletin. 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 Permissible Explosives: Tested Prior to January 1, 1917 S. P. Howell. 1915. 16 pp. Technical paper 125. The sand test for determining the strength of detonators. 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 Permissible Explosives, Mining Equipment, and Apparatus, Approved Prior to March 15, 1922 A complete list of permissible explosives with pertinent data and full descriptive text will be published once during each calendar year. Additions to the Active and Inactive Lists of permissible explosives will be published from time to time as Reports of Investigations. There were 148 Explosives on the permissible list on January 1, During the succeeding 14% months 13 explosives were added to the list and 10 explosives were dropped from the active permissible list and placed on the inactive list of permissible explosives. The present list takes the place of all preceding lists and includes a total of 151 explosives. 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 Permissible Explosives: Tested Prior to January 1, 1914 Technical paper 4. The electrical section of the Bureau of Mines, its purpose and equipment, by H. H. Clark. 1911. 12 pp. 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.