Cameco (CCJ -1.64%) has gone through some very trying times in the past, largely due to its reliance on the price of a commodity when it comes to revenue and earnings. But the uranium that Cameco mines could be in for a big step change in price. Here are three reasons to buy this nuclear power industry supplier like there's no tomorrow.1. Cameco is a picks-and-shovels nuclear playCameco mines for uranium, which is the primary fuel for nuclear power plants. It is also a minority owner in Westinghouse, a serv ...