I was fueling a locomotive at Gavin Yard, Minot, ND. Fueling a locomotive takes about 20-30 Min. There is a airport nearby about 4 miles. I saw what look like a plane flying real slow over Gavin Yard and also flying a little low. There were no blinking lights under the object, just a bright white looked like a landing light for a plane. The height of the object was about one and a half telephone poles high. I was wearing a headlamp on my hard hat and I decided to flash my light at it to signal it just to humor myself. The object changed direction and headed in my direction. The object stopped right above my tanker(semi-tractor) The object made no sound had no wings, no smell that I could remember nor wind. The object was black and cylinder in shape about forty feet in length with a white light pointing down and a little faint red light at the end of it.I got on my radio to see if anyone else could see it but everyone else was inside the tower, as soon as I got off the radio it moved to the south, I watched it for about two minutes and it went slow maybe about 20mph, I looked at my fuel gauge on the locomotive and then looked back to see it and it was gone! The wind was blowing from the west/south west at 11:15 pm July 3rd, 2010.