For a little period of time the BNSF would bring in unit trains of frac sand to be hauled out. On December 11th of 2015 my dad managed to capture 3 trains in one day. This was probably around the peak of the St. Croix Valley RR for business. I sure do wish I wasn't off being a teenager at this time. Really code have recorded some cool stuff.
The leading BNSF locomotive is BNSF #3967 ET44C4
The two trailing locomotives are BNSF #4776 and #5295 both are C44-9W