Abstract: A self-propelled articulated continuous haulage system including an elongated articulated body made up of a plurality of support frames aligned in endy-to-end abutting relationship. A conveyor system is carried by and supported centrally on the support frames. The haulage system includes a pair of endless traction chains carried on opposite sides of the support frames and spanning the length of the body the chains engaging the ground in an operative condition of the system, and a drive for driving the chains to provide tractive and steering effort for the system.

Abstract: An accessory for a mining or tunnelling machine comprising a cutting drum is disclosed. The accessory comprises a radial piston pump mountable in the cutting drum, the pump comprising a plurality of piston and cylinder assemblies adapted to supply water under pressure to a nozzle or nozzles mounted in the periphery of the drum.