любопытный курс по абразивной обработке

The Grinding Doc's
High Intensity Grinding Course
23rd, 24th & 25th May 2011
Host: Greenlee Diamond Tool
Location: Chicago, IL USA
Instructor: Dr. Jeffrey A. Badger, The Grinding Doc

"A completely different way of thinking about grinding."

http://grinding.jbadger.com/HIGCG.html