Friday morning before the sun came up I was in Chicago Illinois delivering some metal straps and next door there was a scrap yard with 2 very loud cranes using giant magnets to move the scrap metal from giant piles in to train cars for the run up to Canada. They would flip the magnet on and pick up a bunch of metal and then drop it to get the snow and dirt off then pick it back up and deposit it in the train car hoppers. I found it fascinating…
Sorry for the quality of the pic, it was pretty dark and the only light was from the lamps on the cranes and the ambient light from the industrial park to the north. I took the pic free handed in aperature mode with the white balance on auto and the ISO maxed for the D7000 at 6400. But still its not a bad pic.. 🙂
Thoughts From The Road 
Cool shot, Ed. I remember trying to do something similar when I was a kid with a much smaller magnet and toy trucks.
Good shot, Ed. 🙂
Wonderful lighting.