Excerpt from The South African Mining Journal and Engineering Record, Vol. 27: Part I., April 20, 1918 Ltd., the engineers and' mining material merchants. (em mander Bartley is Assistant Director of Supplies at the Air Board for the production of aeroplanes, and is giving the whole of his time to this important new branch of the Services. He has been with the Admiralty in connection with the Air Service since June, 1015, and was in France the greater part of 1016; yet another instance of the close association of the leaders of South African industry and commerce with the Empire's war effort. 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.