CSX B750 shoves 2 loaded hoppers down the Marval Industrial Track in Mamaroneck, NY. At the end of the track is Marval Industries; the only customer on this siding and one of the few remaining freight customers CSX serves along Metro North Railroad's New Haven Line. Marval Industries produces colorants, additives, compounds and resins for the plastic industry for injection molding, extrusion, blown film extrusion, blow molding, compression molding, rotational molding and thermoforming.