After the successful test at Volcano Ranch, The University of Utah Cosmic Ray group began the construction of a full-scale observatory based on the same basic design. The new group was led by George Cassiday. Other Utah faculty members working on the new project included Haven Bergeson, Gene Loh, and Pierre Sokolsky. The new Utah experiment began observations in 1981 and was operated until 1993. A second detector site was completed in 1986.