Empty hoppers trundle through Princeton Junction behind a whole lot of six-axle power, including a Central Railroad of New Jersey SD35 as the second unit. Although I have no record of what this train was, the diesels pulling empty hoppers indicate it is returning from an eastern power plant back to central or western Pennsylvania, where there were strip mines along the old PRR. 6151 began life on the PRR in January of 1967, and was probably cut up at Pielet Bros or Hollidaysburg in 1984 in trade for an SD50.