COOK, Minn. – Nine cars of a Canadian National freight train, two of them loaded with propane and butane, derailed north of Cook on the line from Duluth to International Falls on the Canada border. There was fire. Nor were there injuries. No leaks or spills were immediately apparent, said a St. Louis County Emergency Management agent. The railroad, headquartered in Montreal, didn’t respond to queries about the train’s destination. The CN has routes through central Wisconsin with a 50-mile branch to Bluff Siding across the Mississippi River from Winona.