total hydrocarbon content - tripod-mounted magnetometer
- trachyostracous
- trachyte
- trachytic
- trachytic texture
- trachytoid
- trachytoid structure
- tracing
- tracing of a map
- tracing point
- track
- track advancing
- track bond
- track cable
- track chart
- track cleaning
- track closely
- track crossing
- track displacement
- track down the data
- track drill
- track entry
- track haulage
- track laying arrangement
- track level
- track lifter
- track maintenance
- track shifter
- track shoe
- track system
- track-mounted
- track-shifting machine
- tracked event
- tracked gravity incline
- tracked horizon
- tracked vehicle
- tracker
- tracking
- tracklayer-mounted
- trackless
- trackless transport