This Harsco machinery leaves Piedmont in a cloud of dust as it -pardon the pun- grinds its way past a pair of AC44's waiting to do helper service later in the day on 17 Mile Grade.

This rail grinder must be GPS controlled, the main grinders pulled up before this crossing, then this trailing unit dropped it's ginders down and did the rail at the crossing...awesome to watch. F... (more)