Yup, and both BN and GN were using similar equipment on that line well before RailAmerica bought it, so the rail and general track conditions couldn't have been that bad. There's also been a lot of work done to upgrade the track and more is planned for the future, so that 68-pound rail probably won't be around too much longer. Heck, I've seen yard and industrial track, spurs, and sidings that were in far worse shape (and still in use, too!) than what's on the CS&CD line; as long as the track speed isn't high and the roadbed and ties are kept in good shape, the age and weight of the rail won't be a major concern.