Alaska Dispatch by Alex DeMarban. Unemployment in Anchorage has dropped to one of the lowest levels in years, thanks in large part to a "mini-boom" in Cook Inlet and steady growth in other key areas, according to an official with the Anchorage Economic Development Corp (AEDC).   Unemployment in Anchorage fell in May to the "crazy low" figure of 4.7 percent -- the lowest in five years, according to Bill Popp (NGP Photo), the group's president.   ...   "We are the envy of much of the nation," Popp [...]