Ventilation eddy zones at a model coal mine working face /
Kissell, Fred N.
Ventilation eddy zones at a model coal mine working face / by Fred N. Kissell and Richard J. Bielicki. - [Washington] : U.S. Dept. of the Interior, Bureau of Mines, [1974]. - 14 p. - Report of investigations ; 7991 . - United States. Bureau of Mines. Report of investigations ; 7991 . - Report of investigations (United States. Bureau of Mines) ; 7991 .
91065111
Mine ventilation.
Mine gases.
Mine safety.
Ventilation eddy zones at a model coal mine working face / by Fred N. Kissell and Richard J. Bielicki. - [Washington] : U.S. Dept. of the Interior, Bureau of Mines, [1974]. - 14 p. - Report of investigations ; 7991 . - United States. Bureau of Mines. Report of investigations ; 7991 . - Report of investigations (United States. Bureau of Mines) ; 7991 .
91065111
Mine ventilation.
Mine gases.
Mine safety.