Design criteria andrecent developments i-n large-capacity
TheWemco flotation celloftoday started as the Fagergren flotation cell, which was invented in the early 1930's by William Fagergren inUtah, U.S.A. Up to 1948itwas marketed by Cyanamid, and since then byWemco, now aDivision of Envirotech Corporation, MenloPark, California, U.S.A. The Fagergren was characterized by its deep multi-piece squirrel-