Reuters: Heavy dust clouds blowing from Cliffs Natural Resources' abandoned Wabush iron ore mine into a small township in the eastern Canadian province of Newfoundland and Labrador is putting a focus on the liability of miners that seek creditor protection and walk away from assets. Iron ore and coal miner Cliffs Natural Resources Inc announced in February 2014 it was shutting down its Wabush mine. This year it sought creditor protection for its Canadian assets. The fate of the deserted mine is in limbo...