I'm a conductor for CSX, we have several industries around atlanta, ga that utilize boxcars. One is a paper company that load very large rolls of paper (6 rolls just about fill a boxcar from one end to the other stacked 2 high). They load them by forklift by driving straight into the boxcar from a loading dock.
Another place we got is a beer warehouse. They get boxcars with pallets of beer on them, not sure on the volume that they fit in one, but I know that is a lot. One day, in our class yard, one of their boxcar's door flew open, when it coupled to another car, spilling out several pallets of beer on the ground. We all watched in sadness when we saw them throwing thousand's of fresh bottles of Corona's, Bud Light's, and Miller Light's into a large dumpster... a great deal of them unbroken Would have made a big free party !
CSX Transportation, L&N Tennessee Consolidated Trainman's District #2, W&A subdistrict (Atlanta, GA to Chattanooga, TN)