Excerpt from A Study of Open Hearth: A Treatise on the Open Hearth Furnace, and the Manufacture of Open Hearth Steel Realizing as we do that only by a full understanding of all the conditions encountered in actual Open Hearth practice, can refractory materials be so manufactured as to maintain the highest standard for such work, we have made this study of Open Hearth steel furnaces and their operation essentially for the use of our Operating Department. So much interest in this article, however, has been shown by a number of Open Hearth superintendents, who have suggested it as being of interest to iron and steel men generally, that we have decided to publish it in this form. This study claims no originality. Its aim is to put into as concise form as may be, the principles involved, together with such detailed description as may render the subject matter plain to one familiar with no more than the most elementary principles of chemistry and metallurgy. Other articles will be issued from time to time on blast furnaces and hot blast stoves, heating and puddling furnaces, etc., any or all of which may be obtained by a request to be put on our mailing list. 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.