pentahedral - piling up
- permanent lake
- permanent mine opening
- permanent perched water
- permanent rig
- permanent roadway
- permanent stopping
- permanent support
- permanent trench
- permanent varied flow
- permanent working
- permeability
- permeability distribution
- permeability distribution within
- permeability range
- permeability test
- permeability to oil
- permeable
- permeable channel
- permeable confining beds
- permeable confining beds of an aquifer
- permeable groin
- permeable material
- permeable rocks
- permeable strata
- permeameter
- permeation
- permeation gneiss
- permeative boundary
- permesothyridid
- permfrost
- Permian
- Permian limestone
- Permian period
- permian period
- Permian system
- permineralization
- permineralized
- permineralized fossils
- permingeatite
- permissibility test