From: muratlanne@gmail.com   
      
   "Richard Smith"  wrote in message news:m14ivfnpw6.fsf@void.com...   
   ...   
      
   What you are doing is very important in the dry food, pharmaceutical and   
   laundry detergent industries. The difficulty may be getting them to reveal   
   their methods.   
      
   Another way to separate by size for analysis is by settling time in a   
   viscous liquid like olive oil. Diamond dust is separated by size for lapping   
   that way, and a topsoil sample from sand.   
      
   https://en.wikipedia.org/wiki/Vertical_roller_mill   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)