A method of trapping the dust produced by pneumatic rock drills, by P.S. Hay. With a preface, by Professor J.S. Haldane ...

By: Material type: TextTextSeries: [Gt. Brit.] Safety in Mines Research Board. Paper ; no. 23Publication details: London, H.M. Stationery Off., 1926.Description: 18 p. 2 fold. pl., diagrs. 25 cmSubject(s): LOC classification:
  • TN295 .G65 no. 23
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