- blower
- blower casing
- blowing
- blowing cone
- blowing mold
- blown
- blown fuse
- blown petroleum
- blown sand
- blownout preventer
- blowpipe
- blue glow
- blue lead
- blue metal
- blue oil
- blue vitriol
- blue-brittleness
- blued sheet
- blueing salt
- board
- boarded parquetry
- boarder
- bobin oil
- bogen structure
- boghedite
- boil
- boil tar
- boiler bearer
- boiler drum
- boiler plate
- boiler scale
- boiling curve
- boiling flask
- boiling range
- boison
- bole
- boll weevil
- bolt head
- bolting
- bolting cloth
- bomb apparatus
- bomb method
- bonding additive
- bone manure
- book
- boom derrick
- boom jack
- Boord synthesis
- boost
- booster station
- boracic
- boracite
- borax bead
- border rim
- borderline case
- bore oil
- boret bit
- boric acid
- boring rig
- boring sample
- borolon
- boron steel
- borosilicate glass
- boss
- botryoidal structure
- bottled gas
- bottom echo
- bottom gate
- bottom hole
- bottom level
- bottom outlet
- bottom rake
- bottom sample
- bottom steam
- bottom value
- bottoms
- bouguer correction
- bouguer reduction
- boulder stream
- brace head
- bracket
- bradenhead gas
- brake fluid
- brake power
- braking efficiency
- braking heat
- braking pull
- branch
- brattice
- Brazilian rosewood
- breaking length
- breaking pressure
- breather roof
- breathing apparatus
- breeding reactor
- brightness
- brilliance
- bran oil
- branched chain
- brasque