Workers at the huge Ekati Diamond Mine in the Northwest Territories may soon enter a third month on strike with no end to the walkout in sight.

The Ekati mine is 186 miles Northeast of Yellowknife and 124 miles south of the Arctic Circle. It became Canada's first diamond mine when it opened in 1998 at a cost of C$900 million. Ekati currently produces 6 percent of the world's diamonds.

The mine'...