this tiny particle »> · can be ground into 12,812,904 pieces T h e new SWECO Vibro-Energy Mill wet-grinds particles (as tough as iron oxide, shown above) from 60 mesh to one micron or smaller. Until now wet grinding below 10-20 microns has been inefficient, slow and costly. T h e new SWECO Mill grinds quickly, with narrowest particle size distribution, and practically no material contamination. T h i s is accomplished by efficient conversion of energy to particle size reduction through high-frequency, three-dimensional vibration. An illustrated |i| technical paper describes in detail t h e operation and profit potential of the SWECO Vibro-Energy Mill. If ultrafine grinding is a problem in your industry, we will be pleased to send you a copy, without obligation, at yon'"^j^^^ZSjhfc. request, SOUTHWESTERN ENGINEERING COMPANY, Dept. 10, 4800 S a n t a Fe Ave., Los Angeles 58, California. S W E C O
