In excess of 75 trains leave the Wyoming - Powder River Coal Basin each and every day, 365 days a year, that is allot of coal ! I would think that a train traveling from Wyoming to points eastward, for ports exporting our coal to foreign countries like China, or then down to Florida Power & Light (where they burn a 100 ton hopper of pulverized coal each and every 5 minutes, 24/7/365) that allot of coal would be missing, and towns all along the way would be complaining, and police would have the train stopped by calling corporate. BTW: did you know that a local or State cop can use a radar speed detector, and can have a train stopped, and issue a speeding violation.
Envionmental pollution is nothing that I want to replicate ... unless it is a smoke belching Felix_G ALCO, or a Steamer with Twinkles smoke effects