Single roller mining mineral crusher - has sloping surface on spiral profiled portion extending part way over groove
GB2034375A
Mineral-mining cutter drum
ZA7902463B
Cutting machinery
GB2022171A
Pick assemblies for detachable mounting on mining machine cutter heads
ZA7805304B
Cutting drums for mining machines
GB2000539A
Cutting drums for mining machines
DE2827142A1
Cutting drum for mining machine - has cutters attached to periphery of helical member around drum with radial depth of channels between turns increasing from one end of drum
DE2606700A1
Coalface conveyor with cable trough - has sidewall and spaced fence of flexibly connected members plugged together to yield under external force
US4143918A
Mining conveyor assemblies with control boxes on fence
