Nunavut's first diamond mine, Jericho, operated by Toronto-based Tahera Diamond Corp., is still undergoing technical improvements aimed at increasing output and turning losses into profits. The value of the mine's production for the second quarter of 2007 was US$6.4 million, for a total cash operating cost of $16 million, Tahera said in a release Aug. 7. Jericho processed 95,500 metric tons of...