Bob 84 (Worker Graffiti) Worker graffiti in a stairway. If this is your birthday, you have to comment on this post! Similar Images ...based on the tags: blur, concrete, worker-graffiti... Taken just after the sun set over Duluth. Don’t you love that green glow? Short-stack remains of mounts for rod and ball mills, if I was to bet. The concentrator separated junk rock (tails) from the copper and silver ore, to such a point it could be smelted. Looking at the concrete headframe from street level. Acros 100 in Pentax 67 Looking into the mouth of the hopper which mine carts dumped into at the top of the Concentrator. More circa-1935 graffiti. Panorama from where the skyway connected the cleaning house and elevator. ADM Meal Storage is to the right, ADM-4 is to the extreme right, and Kurth is on the left. These tubes would bring cement to the top of the plant for storage in the silos. In front of a rust-welded Illinois rotary stoker is where the boiler-men made their mark. The last year I can make out is 1985. The Eureka Mill, historically known as Sunnyside Mill, is now the gateway to Animas Forks.