Method of making diamond compacts for rock drilling

Method of making reaction bonded/hot pressed Si.sub.3 N.sub.4 fo

Method of making sintered metal-diamond aggregates

Method of manufacturing inserts preferably for machining of heat

Method of producing a sintered diamond compact

Method of producing abrasive grits

Method of producing precision abrasive tools

Microwave sintering of sol-gel derived abrasive grain

Mixture for the care and cleaning of contact lenses

Modified alpha alumina particles

Modified sol-gel alumina

Modified sol-gel alumina abrasive filaments

Moulding composition to produce abrasive tooling

Multi-layer metal coated diamond abrasives for sintered metal bo