[3][2] Starting with the eastbound hump in 1938, the PRR rebuilt the component yards and installed automatic retarders.
The eastbound yard was electrified with 11,000-volt alternating current (AC) service.
[3] In 1953, the yard comprised 145 miles of track and 476 switches[4] and handled 11,000 cars per day.
In 2003, NS announced plans to resume hump yard operations.
[5] As of 2005, the yard was operating 79 tracks and handled 275,000 tons of freight a day.