Peter mines in an area where the "wash"(which is the sapphire bearing dirt) is about 10 metres deep, so he starts by having a shaft drilled which is a 900mm diameter hole.
He sets his mining rig up over the shaft and attaches the ladders from the rig down the shaft.
The automatic hoist on the mining rig pulls the bucket up the ladder to carry the wash up to the surface and dumps it into the bin.
Peter can then start tunnelling around underground, first digging with a jackhammer, then when the area dug out is big enough he puts his big hydraulic breaker in which can break the dirt down off the walls of the tunnel.
He shovels up the dirt into a wheelbarrow and wheels it back to the shaft and dumps it into the bucket of the mining rig.
He pulls the hoist lever which sends the bucket up and thus begins the processing.
Peter’s mining rig features:
All with 3 phase electric motors.
The Sapphires are then hand picked out of the pulsator trays after the washing process.