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HUMBOLDT'S INVENTION OF A GAS MASK FOR MINERS

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HUMBOLDT, Alexander von.  Ueber die unterirdischen Gasarten und die Mittel ihren Nachtheil zu vermindern. Ein Beytrag zur Physik der praktische Bergbaukunde.
Braunschweig, Friedrich Vieweg, 1799. 8vo. With 3 folded engraved plates. Modern half leather.

Orders and Information   € 2950

Darmstaedter, p. 272; L÷wenberg 57; Sotheran, Second Suppl. 14123 (rare); not in Hoover.
Very rare collection of studies of air and gasses in mineshafts, including Humboldt's invention of safety lamps and a rescue apparatus for miners threatened with asphyxiation. Both devices had been tested by Humboldt himself in dangerous experiments. The author was employed by the Prussian mining service in 1792 and soon became manager of a mine. In the present work he investigates the air condition of mines under different circumstances, writes on subterranean meteorology, and deals with the technological side of mining matters (DSB VI, p. 549). Some foxing; a few pages with marginal restoration; a good copy of this interesting work on mining.



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