Superior Stone Co Lexington quarry Davidson Box 2568 
   Raleigh, N.C. 27602 
      Do Hicone quarry Guilford    do                
      Do Bakers quarry Union    do                  
   Young Stone Co., Inc Gold Hill quarry Cabarrus Box 11424 
   Charlotte, N.C. 28209 
Talc and pyrophyllite: 
   Pyrophyllite: 
      Boren & Harvey, Inc Snow Camp mine Alamance Box 7247 
   Greensboro, N.C. 27407 
      General Minerals Co Glendon mine Moore Box 3504 
   Greensboro, N.C. 27402 
      Piedmont Materials Co., Inc Hillsboro mine Orange P.O. Box 7247 
   Greensboro, N.C. 27407 
      Standard Minerals Co., Inc Moore mine Moore Robbins, N.C. 27325 
   Talc: Hitchcock Corp Nancy Jordan No. 4 mine Cherokee Murphy, N.C. 28906

Vermiculite, exfoliated: 
   Lee-V-Lite, Inc Sanford plant Lee Box 543 
   Sanford, N.C. 27330 
   W. R. Grace & Co High Point plant Guilford Cambridge, Mass. 02138