Smokestack Swirls Fly ash, kicked up by downdrafts, rise again up the smokestack that is the signature feature of the plant. It’s a steel top hat. Similar Images ...based on the tags: circles, dusty, rivets, sepia, smokestacks... A self portrait. A look at the Longmont Sugar Mill in May 2014. A calendar and comic strip decorate the current pattern shelf in the building which was a coffin factory. It will be a good harvest. A sizable crane on the corner of the engine house still swings out. The purpose of the concentrator was to separate the gold and silver-rich ore from the waste rock. You can tell from the design that the process relies heavily on gravity. Electric Steel’s bins reflect the sunset. The side of Stelco and its scrubber-stacks. This is demolished now. Looking toward the power station at the edge of the explosives plant.