- dopplerite
- Dorr classifier
- dividing edge
- dividing ridge
- Dixon ring
- dock
- dock warrant
- doctor solution
- dodecadiume
- dog hook
- dolerite
- dolerophanite
- dolomitic limestone
- domal structure
- dome gas
- domed
- domestic coal
- domestic market
- domestic oil
- domeykite
- dominant mineral
- doming
- dope
- dope gang
- double binding
- double block
- double bottom
- double course
- double distribution
- double flange
- double pin
- dough mixer
- doughnut ring
- doughy
- douglasite
- down jet
- down structure
- Downs cell
- downstream
- downward condenser
- downwards
- dpropanizing tower
- dradge
- drafting
- drain
- drain tap
- drainage
- drainage ratio
- drained
- draw
- draw bar
- draw work
- drawing compound
- drawing off
- drawing out
- drawnork drum
- dredge
- dredge boat
- dredge working
- dressed coal
- dressed ore
- drift
- drift cap
- drift deposit
- drift velocity
- drill ground
- drill out
- drill sharpening
- drilling contract
- drilling crew
- drilling operation
- drilling site
- drilling unit
- drip pot
- driver oil
- driving wheel
- dry coloring
- double acting
- double bend
- double bond
- double displacement
- double drum
- double linking
- double reduction
- double stroke
- double tariff
- douglas fir
- Dousol process
- dovetail joint
- down shaft
- down ventilation
- downwarping
- dowsing
- draft
- draft gage
- drag factor
- drag ore
- drain pit
- drain trap
- drainage basin