 However, evangelicals targeted the diocese as the location for a new seminary, Trinity Episcopal School for Ministry, and spent much of the 1970s pushing the diocese towards the theological position favored by that group.By the 1990s they had changed the theological mix of the diocese.Under Bishops Alden Hathaway and Robert Duncan, St. Margaret's Hospital and Canterbury Place were turned over to control of UPMC; St. Barnabas was released to an independent non-denominational board; Sheldon Calvary Camp became the last diocesan institution with a board closely tied to the diocese.