General industry standard for nickel deposits

project

Ore type and mining method

Nickel sulfide ore

Nickel oxide -

Nickel silicate

Primary ore

Oxidized ore

Pit mining

Lucai

Boundary grade, Ni%

Minimum industrial grade, Ni%

(based on single project single ore layer )

0.2 to 0.30

0.3 to 0.50

0.7

1

0.5

1