exha - fail
- expansion-sleeve bolt
- expansion-type support
- expect
- expected life
- expected production
- expedite
- expel
- expend
- expenditure
- expense
- expenses for operation
- expensive
- experience
- experienced
- experimental research
- explain
- explanation
- explode
- exploder
- exploit
- exploitation
- exploitation defects
- explorating trench
- exploration
- exploration crew
- exploration drilling
- exploration mine working
- exploration of deposits
- exploration rig
- exploration techniques
- exploratory
- exploratory adit
- exploratory boring
- exploratory drift
- exploratory drilling
- exploratory shaft
- exploratory trench
- exploratory well
- exploratory workings
- explore
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