The result of testing conducted on a small group of residents of Port Hope has found contamination by uranium of military or industrial origin... Cameco Corp., the world's largest uranium producer, operates a processing plant in Port Hope that makes fuel for nuclear power reactors... [The Port Hope Community Health Concerns Committee said] "The study calls into question the federal guidelines and standards used by [the government]...and Cameco to monitor radiation exposure and protect workers and the community"... But Health Canada has previously issued studies that have found cancer incidence and mortality around Port Hope to be similar to the general provincial population.