History: Roof Drill
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r193975 · current
- Created Roof Drill (assembly): "A hydraulic rock drill on a feed beam carried around a ring track behind the roof shield. The roof drills make the holes for rock bolts in the crown and walls, and holes for drainage or grouting where needed."
- Added main-beam-tbm-rock-drill × 1
- Added main-beam-tbm-drill-feed × 1
- Added main-beam-tbm-drill-positioner × 1