AbstractsMedical & Health Science

Ventilation at the Portovelo mines

by John Paul Harmon

Institution: Missouri University of Science and Technology
Year: 1932
Record ID: 1521937
Full text PDF: http://hdl.handle.net/10355/26148


"This paper was written with two objects in view: (1) To describe in detail what has been done toward the ventilation of the main unit of the Portovelo mines and the results; (2) to give information that may be useful to anyone who may have to make a preliminary mine ventilation survey, with recommendations for the improvement of the existing system and finally the maintenance of the improved system" – p. 1.