Technical paper issued by the Bureau of Mines over the introduction of underground latrines in mines to increase sanitary conditions. The improvements made by underground latrines are presented and discussed. This paper includes photographs, and illustrations
Technical paper issued by the Bureau of Mines over the black sands of Oregon and California. The his...
Technical paper issued by the Bureau of Mines over studies on low-temperature carbonization of coal....
Technical paper issued by the Bureau of Mines over the development of carbon monoxide alarms and rec...
Technical paper issued by the Bureau of Mines over progress made for thawing gravel in placer mines....
Technical paper issued by the Bureau of Mines over change and wash houses in the Lake Superior area....
Technical paper issued by the Bureau of Mines over safety prevention in coal mines. Preventing mine ...
Technical paper issued by the Bureau of Mines over gas masks developed for gasoline and petroleum va...
Technical paper issued by the Bureau of Mines over microscopy of pulverized ores. As stated in the i...
Technical paper issued by the Bureau of Mines over studies on dust respirators. The development and ...
Technical paper issued by the Bureau of Mines over studies in mine safety and communication. The met...
Technical paper issued by the Bureau of Mines over studies of West Virginia coal fields. Characteris...
Technical paper issued by the Bureau of Mines over studies of analyses of coals. The results are dis...
Technical paper issued by the Bureau of Mines over mining of red iron ores in Birmingham, Alabama. A...
Technical paper issued by the Bureau of Mines over transportation of motor gasoline by pipe line. Th...
Technical paper issued by the Bureau of Mines over sanitary conditions in Birmingham district mining...
Technical paper issued by the Bureau of Mines over the black sands of Oregon and California. The his...
Technical paper issued by the Bureau of Mines over studies on low-temperature carbonization of coal....
Technical paper issued by the Bureau of Mines over the development of carbon monoxide alarms and rec...
Technical paper issued by the Bureau of Mines over progress made for thawing gravel in placer mines....
Technical paper issued by the Bureau of Mines over change and wash houses in the Lake Superior area....
Technical paper issued by the Bureau of Mines over safety prevention in coal mines. Preventing mine ...
Technical paper issued by the Bureau of Mines over gas masks developed for gasoline and petroleum va...
Technical paper issued by the Bureau of Mines over microscopy of pulverized ores. As stated in the i...
Technical paper issued by the Bureau of Mines over studies on dust respirators. The development and ...
Technical paper issued by the Bureau of Mines over studies in mine safety and communication. The met...
Technical paper issued by the Bureau of Mines over studies of West Virginia coal fields. Characteris...
Technical paper issued by the Bureau of Mines over studies of analyses of coals. The results are dis...
Technical paper issued by the Bureau of Mines over mining of red iron ores in Birmingham, Alabama. A...
Technical paper issued by the Bureau of Mines over transportation of motor gasoline by pipe line. Th...
Technical paper issued by the Bureau of Mines over sanitary conditions in Birmingham district mining...
Technical paper issued by the Bureau of Mines over the black sands of Oregon and California. The his...
Technical paper issued by the Bureau of Mines over studies on low-temperature carbonization of coal....
Technical paper issued by the Bureau of Mines over the development of carbon monoxide alarms and rec...