Decomposed Weight Displacement. 1969

"Building construction materials.  Five piles of raw materials, ingredients of the  building, distributed on the floor in piles equal to the artists’ body weight.  Each week the museum contacts the artist by telephone.   Piles of insulation, sawdust, gypsum, cement and metal filings then adjusted according to his exact weight reported at the time of the call."

Installation Museum of Contemporary Art, Chicago