grey - hard
- grey cast iron
- grey cobalt ore
- greywacke
- grid
- grid roller
- grid sheet survey
- grid survey
- grid-ironing
- griddle
- grief stem
- grill
- grillage
- grind
- grind a tool
- grind by attrition
- grind drill
- grind duration
- grind severity
- grindability
- grindability index
- grindability limit
- grindability margin
- grindability rating
- grinded production cyanidation
- grinder
- grinding
- grinding amalgamator
- grinding ball
- grinding bodies' scrap
- grinding capacity
- grinding circuit
- grinding kinetics
- grinding medium
- grinding mill
- grinding pan
- grinding rate
- grinding ring
- grinding stand
- grinding stone
- grinding-and-drying plant
