Frasch process

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Frasch process

Process used to extract underground deposits of sulphur. Superheated steam is piped into the sulphur deposit and melts it. Compressed air is then pumped down to force the molten sulphur to the surface. The process was developed in the USA in 1891 by German-born Herman Frasch (1851-1914).

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Franz Ferdinand
Franz Josef Land
Franz Joseph
Franz, Dennis
Franz, Robert
Franzen, Jonathan
Frascati

Frasch process
Frasch, Herman
Fraser
Fraser, (John) Malcolm
Fraser, Angus Robert Charles
Fraser, Antonia (Pakenham)
Fraser, Bruce Austin, 1st Baron Fraser of North Cape
Fraser, Dawn

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