The story of CrushGrind® - .CrushGrindLooking at it, he noticed that the mill was ceramic, which was unusual at the time. Peugeot, who originally invented the first mills back in 1842, had been selling the same steel grinder mechanism for more than a century, and competitors were offering similar grinders made from other materials, such as plastic and nylon.crushing vs grinding ceramics,Ceramic Materials.CERAMIC. MATERIALS I. Asst. Prof. Dr. Ayşe KALEMTAŞ. Office Hours: Wenesday, 09:30-10:30 am. akalemtasmu.edu.tr, akalemtasgmail, Phone: 211 19 17. Metallurgical and . Crushing and grinding typically are dry processes; milling may be a wet or dry process. ... Wet versus dry grinding. Because of the dust.