growler - heavy silicate
- hazardous
- hazardous area
- hazardous rock
- hazardous roof
- hazardous wave direction
- hazel
- hazie
- hazy horizon
- HDR
- head
- head block
- head board
- head coal
- head elastic section
- head erosion
- head fall
- head filling
- head frame
- head grades
- head joint
- head of current
- head of lava
- head of liquid
- head of rip
- head of water
- head pulley
- head race
- head race channel
- head ratio
- head rope
- head sea
- head tower
- head wave
- head wave arrival-time curve
- head wave raypath
- head wave time-distance line
- head wave travel
- head wind
- head-and-tail rope haulage
- head-lagging