General requirements for industrial indicators of copper deposits

project

Sulphide ore

Oxidized ore

Pit mining

Lucai

Boundary grade (ωB)%

0.2 to 0.3

0.2

0.5

Minimum industrial grade (ωB)%

0.4 to 0.5

0.4

0.7

Average grade of the deposit (ωB)%

0.7 to 1.0

0.4 to 0.6

Minimum recoverable thickness m

1 to 2

2 to 4

1

Stone removal thickness m

2 to 4

4~8

2