Double shaft breaker

Double shear material chopper

Double solenoid electric ore stamp

Double toggle jaw crusher

Double wedge key plates for a jaw crusher

Double-revolving disc refiner

Double-roll machine for comminuting a bed of material

Drive arrangement for rotary shredding apparatus

Drive coupler

Drive system for grinding mills

Driving apparatus for hoist pan

Drug activation process and vibrational mill therefor

Drum grader for garbage

Drum mill

Dry grinding system for preparing iron ore for an...

Dry material feeder and measuring device

Drying and pulverizing device

Drying mill and method of drying ground material

Dual auger shredder

Dual cover and feed tube protector actuation apparatus for a...