The NCIR operates a short segment of industrial trackage spun off by a Class I railroad. The line is one of many owned and managed by parent company Pioneer.
Crews are dispatched to operate the NCIR on an as-needed basis, usually several times per week. Operations can take anywhere from one to several hours.
Pioneer will shuffle locomotives between divisions due to mechanical issues or changes in traffic levels. Alco RS11 no. 318 (former Kankakee, Beaverville & Southern) is current power on the NCIR. RS3m no. 102 (a former Conrail Altoona rebuild) seems to draw the NCIR assignment whenever the 318 is down for repairs.
I should mention that there is a prototype New Castle Industrial Railroad, which operates north of Pittsburgh, Pennsylvania. The 1/48 scale NCIR, however, is a figment of my imagination blending ideas from several prototype operations.