base - blad
- base correction
- base course; subjacent seam (bed, stratum, formation)
- base line
- base map
- base net
- base pendulum
- base plate
- base plate derrick
- base station monitor
- base surge fallout
- base-line drift
- base-metal survey
- base; foundation; platform
- basement depth
- basement fault
- basement feature
- basement identification
- basement magnetics
- basement map
- basement mapping
- basement step
- basement survey
- basement surveying
- basement topography
- basic (spec.) data
- basic crust
- basic data
- basic formula
- basic ion
- basic research
- basic; basic specifications data
- basket bit
- basket cementing
- basket jig
- basket strainer
- basket, cementing
- basset edge
- bastard granite
- batch counter
- batch grinding
