The fifteen concrete works by Donald Judd that run along the border of Chinati's property were the first works to be installed at the museum and were cast and assembled on the site over a four-year period, from 1980 through 1984. The individual units that comprise each work have the same measurements of 2.5 x 2.5 x 5 meters, and are made from concrete slabs that are each 25 centimeters thick. Funding for the project was provided by the Dia Art Foundation. Judd decided to finish the remaining boxes by having them cast in place and hired an architect/concrete expert, Bob Kirk, Jr., from Architectural Concrete Associates Inc. in Dallas, to oversee the work. note: the same Bob Kirk who assisted debartolo architects on the site cast concrete walls at the 2007 prayer chapel.