Side Door A side door for the shop area with ivy crawling toward it. Similar Images ...based on the tags: doors, grass, signs, triangles... In the corner of most of the factory floors, freight elevators flanked restrooms to leave more central space for machines and their masters. Two charmers, I’m sure. This area was a coal pit for the nearby power plant. A big sliding fire door opens onto a train dock. Near the old slag dump there are the remains of the pouring buckets that received the molten steel from the US Steel blast furnaces, filled to the brim with pig iron. They must be incredibly heavy! This “pit” would allow workers to crawl below locomotives to service them. The power gauge showed… broken. Ruster at The Pool… employee graffiti about 100 above ground. These houses was built by hard rock miners in the early 1900s. Looking up at the most conspicuous graffiti in the city on ADM #4.