Reuters exclusively reported that Canada’s First Quantum Minerals was considering putting its key Panama copper miner on care and maintenance from Nov. 23, effectively shutting production at a mine that accounts for about 1% of global output. Citing sources familiar with the matter, Reuters reported that the move follows protests that blocked coal from reaching First Quantum’s plant. Supply concerns at First Quantum’s Panama contributed to copper prices jumping to two-month highs traders said while First Quantum shares extended fall to drop as much as 5.7% on the news.