Read this article by Lauren Krugel in the Calgary Herald about a dozen significant oil and gas leases in the central Mackenzie area. (August 12, 2012) “(Chief Wilfred) McNeely said some residents are concerned about how much water would be drawn from the Mackenzie River for the fracking process, in which producers inject water, sand and chemicals into the rock at high pressure in order free the oil and gas. He said some have also expressed concern over chemicals contaminating the river.”