April 6, 1993 - US EPA
is 1499, miscellaneous nonmetallic minerals, except fuels. For vermiculite processing, the SIC Code is 3295, minerals and earths, ground or otherwise treated. The six-digit Source Classification Code (SCC) for vermiculite processing is 3-05-033. The world's largest deposit of vermiculite, which is located near Libby, Montana, is no longer in ...