Hi, Just a thought. Perhaps contacting the Public Library for Medicine Hat. They may have some reference to the train wreck/accident that occurred near Medicine Hat in 1889.
http://www.shortgrass-lib.ab.ca/mhpl/Contact the Provincial Archive in Edmonton. There may be some information etc.held.
There may have been an inquiry/autopsy - the files from the coroners office may have been transferred to the Archive.
Cheers & Good Luck,Stella