This landmark study of the hazards of industrial dust exposure was a turning point in American public health policy, and remains a foundational work in occupational medicine to this day. Based on extensive field research and statistical analysis, Hoffman's report exposed the epidemic of lung disease among granite-stone workers in the United States, and laid the groundwork for the first comprehensive regulations to protect worker health and safety in industrial settings. Whether you are a historian of medicine, a public health advocate, or simply interested in the social and ethical dimensions of industry and labor, The Problem of Dust Phthisis is a must-read book. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.