Ventilation at the Portovelo mines
Institution: | Missouri University of Science and Technology |
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Department: | |
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.