Hecla Mining Co. Jan. 10 reported that its Greens Creek Mine in Southeast Alaska produced 9.25 million ounces of silver in 2016, the highest production since the Idaho-based miner bought full ownership of the operation in 2008. This strong performance helped push Hecla's total silver production to a record 17.2 million oz, 48 percent higher than 2015.

In addition to the silver, Greens Creek pr...