Prime Minister Justin Trudeau's Liberal government has pledged to cut carbon output 40% to 45% below 2005 levels by 2030 and reach net-zero emissions by 2050.
Imports of unwrought copper and copper products for the year totalled 5.53 million tonnes, down 17.2% from 2020's record volume of 6.68 million tonnes.
A senior cabinet minister said in a statement the ban implemented on Jan. 1 had been eased for miners that have met a requirement to sell a portion of their output for local power generation.
