Mining Flashcards
what is ore?
material that can be mined, processed and sold at profit
BCM
bank cubic metre - measure of volume of material
swell factor
when blasted the material swells and the density drops to loose or broken density
dilution
tonnes of waste material unavoidably mined together with the ore and sent to the processing plant
selectivity
ability to mine to precise geological boundaries
mining recovery
percentage of ore that is sent to the processing plant
processing recovery
percentage of the commodity that is extracted from the ore
ore mineral
mineral from which the valuable component will be derived
grade
proportion of the ore that is actual metal content that can be extracted
strain
deformation of material, amount of deformation an object experiences compared to its original size and shape
elastic deformation
perfectly elastic when straining or unstraining takes place once the load is applied or removed
brittle/ductile
rupture when the continuity of the deformation is lost
plastic is irreversible
brittle: recording the brittle elastic failure of rocks
ductile: preserving the permanent visco-plastic deformation
fault
planar fracture or discontinuity in a volume of rock
joint
fracture in rock where the displacement associated with the opening of the fracture is greater than the displacement due to lateral movement
transform boundaries
2 plates sliding past each other