Over the years there has been several discussions on the fires that destroyed the two Stone structures at Alpine Tunnel. There was an opinion floated that the Boardinghouse/Sectionhouse was burned before the Enginehouse. This enlargement from a glass plate shows evidence to support the notion that there was considerable damage done to the roof prior to the Enginehouse burning but whether it be by fire or snowload isn't quite clear.
UpSideDownC
in New Zealand