OK Matt, I give up. I won't waste any more electrons. Call the mine Groveland if it makes you happy. Never mind that the mine is on the 3.4 mile American Rock Salt Branch, while Groveland is at MP 24.4 on the Genesee & Wyoming Subdivision, and several miles away from the mine. Maybe HexOmega should ask the powers that be to revise their employee timetable.
You watched all those covered hoppers go by and didn't even notice whether they were loaded or empty. An astute railfan can tell a lot about what he is seeing if he knows what to look for. Not telling you HOW to watch trains, but if you care to know, take a look at the truck springs - loaded salt cars will have the springs compressed, while an empty will have the springs more extended. It does not work for a car of feathers, but for a full load of rock salt it provides a pretty good clue.