CIC, which holds slightly over 10% of Teck’s Class B shares, says Glencore's bid would allow for a cleaner exit for investors.

Industrial legacy buried in the Arctic permafrost or deposited on its surface may no longer be contained by the frozen soil, researchers have found.

Analysts see Lundin move as an indication that investors may be regaining confidence in the world no.1 copper-producing country.

Glencore has offered Teck's shareholders 24% of the combined metals group and up to $8.2 billion in cash for those who may not want exposure to thermal coal.