A method of trapping the dust produced by pneumatic rock drills,

Hay, Peter Stewart, 1884-

A method of trapping the dust produced by pneumatic rock drills, by P.S. Hay. With a preface, by Professor J.S. Haldane ... - London, H.M. Stationery Off., 1926. - 18 p. 2 fold. pl., diagrs. 25 cm. - [Gt. Brit.] Safety in Mines Research Board. Paper no. 23 .

gs 27000056


Mine safety.
Rock-drills.

TN295 / .G65 no. 23

Powered by Koha