The Century with Mushroom Clouds: Project for the 20th Century Nuclear Test Site, Nevada; at Michael Heizer’s Double Negative (1969-70), Mormon Mesa, Overton, Nevada; at Robert Smithson’s Spiral Jetty (1970) Salt Lake, Utah; and at various sites looking toward Manhattan, New York 1996 More Information Back to 1996 Projects		Photo 1  2  3  4  5     Video 1