From the Jan. 11, 1945, News Record:
Train service through Gillette was disrupted Monday when train No. 79, a through freight, rammed into the way car of the local. Train 79 was a double header and one engine and four cars were derailed. The accident occurred at the Clay spur between Upton and Osage. The fourth car in the train was loaded with dynamite and, though the car was thrown over on its side the dynamite took the shock without exploding. It was estimated there were enough explosives in that car to demolish both trains and play havoc with a wide territory, if it had exploded. The dynamite was removed from the scene of the wreck by trucks. There was no one injured. Passenger trains 42 and 43 met at the scene of the wreck and transferred mail, baggage and passengers. The lines were cleared within a few hours with equipment sent from Sheridan.