trip - ultr
- two-shift operation
- two-side pit bottom
- two-sided
- two-sided cutting
- two-sided gravity incline
- two-size cleaning plant
- two-speed drawworks
- two-stage
- two-stage crusher
- two-stage crushing
- two-stage cyclone
- two-stage grinding
- two-stage pumping
- two-stage separation
- two-stage thrust jacking system
- two-start spiral cutting head
- two-step
- two-stick timbering
- two-unit portable crushing plant
- two-unit tester
- two-way
- two-way bit
- two-way chute
- two-way cock
- two-way cycle
- two-way manriding conveyer
- two-way mining
- two-way radio
- two-way reinforced concrete
- two-way road
- two-way roadway
- two-way shots
- two-way spread
- two-way traffic
- two-way valve
- two-well derrick
- two-wing drag drilling bit
- two-winged stope
- two-wire system
- tye
