heavy spar - honeycombed ice
- high pinion or girth gear wear or misalignment
- high plasticity
- high plateau
- high pressure reservoir
- high priority target
- high rate
- high relief
- high resolution satellite image
- high resolution tools
- high saturation
- high sea
- high shaft collar
- high side
- high velocity
- high wall
- high water
- high water full and change
- high water level
- high water mark
- high water neaps
- high water slack
- high water stand
- high wave crest
- high wind
- high yield bentonite
- high-amplitude
- high-amplitude anomaly
- high-amplitude event
- high-amplitude noise
- high-amplitude reflection
- high-amplitude reflector
- high-amplitude seismic energy
- high-amplitude wave
- high-angle
- high-angle fault
- high-angled fault
- high-ash
- high-ash coal
- high-calc
- high-capacity car