Guilford Rail System changed its name to Pan Am Railways in 2006. Discussion relating to the current operations of the Boston & Maine, the Maine Central, and the Springfield Terminal railroads (as well as the Delaware & Hudson while it was under Guilford control until 1988). Official site can be found here: PANAMRAILWAYS.COM.
Ballast regulator kicks up the dust from new stone dropped on rebuilt track 2 mid-day Friday 7/13/18 at the derailment site at South Royalston (Harsco tamper was holding near the rte 68 crossing). A Facebook posting indicated 22K may have used track 2 that evening.