The 52' gondola was the mainstay of Conrail's gondola fleet, hauling everything from scrap and slabs to finished steel coils. Unlike some other car types, Conrail's thirst for gondolas remained steady throughout the entire life of the railroad. Big Blue bolstered its gondola fleet throughout the years by rebuilding old cars into the G52M, G52N, G52P and G52Q classes, and also purchased used gondolas from roads like the Rock Island, P&LE, Bethlehem Steel, MKT, MP, and the DT&I.
Class G52M (CR series 587000-587249) were rebodied from class GE52H (EL series 44100-44599) gondolas by the Hollidaysburg, PA car shops in 1992.
CR 587700-588249 series were rebodied from G47 class gons by HolidaysburgÂ between 1992-1993
Class G52P (CR series 588250-588649) were rebodied from various G43 classes by the Hollidaysburg, PA car shops in 1993 and 1994.