Explanation:

More than half of the world's uranium production comes from just 10 mines. Canada, the second biggest uranium producer in the world, hosts the world's biggest - the McArthur River uranium mine - while Kazakhstan, the largest uranium producing country
McArthur River mine located about 620km north of Saskatoon, Canada, is currently the world’s largest uranium producing mine. It produced 7,520 tonnes of uranium in 2012, accounting for 13% of the world’s total uranium production. McArthur River is also considered to be the largest high-grade uranium deposit in the world