This is where the jumbo operator has finished scaling the heading to remove most of the loose rocks. He then manipulates sheets of mesh, 2.4m wide and up to 5m long, into position with the jumbo's boom(s). He then drills holes and 'bolts' (pins) the mesh onto the rock surface with a variety of 'rock bolts', measuring from 900mm long, to 3000mm long (generally about 47mm thick). My job is to train him how to do this, especially when using different and new bolts, that he might not be familiar with. This guy is an artist. No names, as we are not discussing which mine it is. I wrote him a nice report for his boss!