Open Pit

Question 1

select surface

Answer 1

depends on value of commodity, grade and grade distribution

Question 2

open pit mining

Answer 2

process of excavating near surface ore deposit by means of an excavation or cut made at the surface

Question 3

advantages

Answer 3

achieve high extraction of the ore reserce, low dilution, higher safety and environmental quality

Question 4

disadvantages

Answer 4

large amount of surface disturbance, environmental impact is large

Question 5

pushbacks/cutbacks

Answer 5

expansion of the pit is performed through consecutive pushbacks or cutback

Question 6

strip ratio

Answer 6

possible to estimate the pit limit