district air crossing - drill hole collar
- dragging
- dragging device
- dragging of minerals
- dragline
- dragline cableway
- dragline excavator
- dragline mining method
- dragline stripper
- dragma
- dragon's skin
- dragonet
- dragsman
- drain
- drain box
- drain line
- drain off
- drain sump
- drain tank
- drain the neighbouring properties
- drainage
- drainage adit
- drainage area
- drainage basin
- drainage capillary pressure
- drainage channel
- drainage cone
- drainage ditch
- drainage ditch of 0.004 grade
- drainage divide
- drainage for shaft-sinking
- drainage gallery
- drainage gas saturation
- drainage hopper
- drainage level
- drainage lines
- drainage of a deposit
- drainage oil saturation
- drainage oil/water/gas saturation
- drainage pattern
- drainage rate