Frank Peacock comes through with positive proof of an N&W hopper on Sherman Hill:
UP Form 2639 shows N&W 78188 ( an H-2 I think) on a coal drag behind 9061E on 11-23-47 with company coal for Chian. Also Gons or hoppers from MV, MP, IC, C&IM, Alton, NSS, C&EI, PRR (Big surprise there), SOU, NKP, etc. FHP (Frank H. Peacock)