He suggests using a hammer drill and a tungsten carbide masonry bit. Drill/hammer drill bits have carbide tips and a smooth shank that can be chucked into a typical three-jawed chuck. While rotary ...
During the 10 o’clock hour on October 17, millions of Californians will take part in a statewide earthquake preparedness drill, which state leaders say is part of the largest such drill in the ...
New Standout Intercepts Confirm Down-Dip Continuation of High Grade Copper Mineralisation at Flat Mine South. Orion Minerals Limited Incorporated in the Commonwealth of Australia ...