- gryphite limestone
- guaranty
- guejarite
- guest mineral
- guide formation
- guided
- gulf binder
- Gulfining
- gum dynamite
- gun cotton
- gun grease
- gun perforating
- gusher
- gusher sand
- guy anchor
- guy cable
- guy ring
- guyed derrick
- guyed mast
- guyed stack
- gynocardic
- gypsiferous
- gypsum plaster
- gyratory crusher
- gyve line
- hackly fracture
- haemolysin
- halobolite
- halogenic deposit
- halokinesis
- hammer drill
- hammer grab
- hammer welding
- hand centrifuge
- hand cleaning
- hand level
- hand molding
- hand picking
- hand shoveling
- hand winch
- hanger flange
- hanging glacier
- harbolite
- hard coal
- hard detergent
- hard formation
- hard glass
- hard ice
- hard rays
- hardboard
- hardened case
- hardening agent
- hardening process
- hardening shop
- hardness oil
- hardness tester
- Hargreaves process
- harmless
- Hasche process
- hatchettine
- haul
- haulage clip
- haulage road
- hauling unit
- hauynite
- hackmanite
- haematic
- half green
- half-full
- half-steel
- halloysite
- halmyrolysis
- halogenated ester
- halogenide
- hammer finish
- hand hammer
- hand pick
- hand press
- hand stopping
- handling loss
- hanger
- hanging wall
- haptophore
- hard asphalt
- hard fiber
- hard iron
- hard lead
- hard oil
- hard pitch
- hard rubber
- hard sugar
- hard water
- hardener
- hardening
- hardening bath
- hardening carbon
- hardening furnace
- hardening heat
- hardening temperature
- hardenite