On this first day of CSX ownership of Pan Am Railways, I was re-reading the Wikipedia article re: PAR and learned (or perhaps re-learned!) that Mellon had the following expansion notions back in the 1980s:
Expansion attempt
In 1985, Guilford entered into an agreement with Norfolk Southern Railway (NS) to run trains to St. Louis. NS was attempting to win approval of a plan to purchase Conrail from the U.S. government and proposed allowing Guilford to lease Conrail lines to St. Louis in order to restore competition that would be lost in the merger. The plan would have allowed Guilford to use the Conrail mainline from Toledo to Ridgeway, Ohio, and from Crestline, Ohio, to St. Louis. Guilford would also purchase 955 miles (1,537 km) of Conrail track and 1,300 freight cars from Norfolk Southern for $53M.[11] NS did not prevail in its attempt to purchase Conrail in 1985, and the Guilford plan was dropped. In 1987, Guilford also placed a bid to buy Southern Pacific.