Bingham Copper Mining Pit—Utah / Reclamation Project Robert Smithson 1973 Bingham Canyon Copper Mine, Utah, USA Works on Paper
Spiral Jetty in Red Salt Water Robert Smithson c. 1970 Rozel Point, Great Salt Lake, Utah, USA Works on Paper
Towards the Development of a Cinema Cavern or the Movie Goer as Spelunker Robert Smithson 1971 Works on Paper