main - meas
- main
- main adit
- main air roadway
- main airway
- main and mounting winch
- main angle
- main bearing
- main belt
- main belt conveyor
- main body
- main bottom
- main cleat
- main converting unit
- main conveyor
- main conveyor chain
- main crosscut
- main current
- main deep
- main dip haulage
- main distribution board
- main drift
- main drive
- main drive of AC-type with frequency variable speed control
- main drive of DC-type with thyristor control of excitation
- main entry
- main fan
- main floor
- main frame
- main gallery
- main gate
- main gravity incline
- main haulage horizon
- main haulage level
- main haulage road
- main haulage roadway
- main heading
- main hoist
- main hypothesis
- main incline
- main index
