Your point is well taken Dean. My question was not regarding air quality in the area, but electrical generation and where that electricity winds up. Which in the grand scheme of things is really not too important, as the fact remains that the area is an environmental disaster. There is major strip mining in the Black Mesa and Kayenta areas to fuel coal fired plants in Laughlin (Mojave Generating Station, near as I can tell currently closed) and Page (Navajo Generating Station, now receiving coal from both the Black Mesa and Kayenta Mines). The Page station is the main source of the air pollution in the area, and the mines have had detrimental effects on the ground water. By the way, over 14,000 Native Americans were relocated due to the mines, the largest NA relocation since the 1880s. Much of this is occurring on Tribal Lands with Tribal approval. We are obviously not going to solve the problems of the area here, but I really feel sorry for photographers who never had or will have the opportunity to shoot the area back in the day when the air was clean. And no one has mentioned in this discussion the epic screw-up and destruction of Glen Canyon, which by all accounts was one of the natural marvels of the planet. Thanks to everyone for their contributions to this discussion, fact is even with all of the major problems it is still a tremendous area to visit. My favorite is Grand Staircase-Escalante National Monument, which is remarkable even with sometimes marginal air quality!