Here is a link to a great short films on a typical day in a life of a grain elevator. Lots of good detail, including coopering a
grain door, moving a boxcar by hand, and how they were filled. While shot in 1981, it shows how boxcars were filled with grain
during the entire time of the STMFC list.

http://www.nfb.ca/film/grain_elevator/

Doug Harding
www.iowacentralrr.org