Fire Slide Looking into one of the fire slides, designed to evacuate patients extremely quickly. In 1880, a fire completely destroyed the asylum at St. Peter, Minnesota, killing 30 patients. Related Similar Images ...based on the tags: fire-escapes, rusty, slides... The bottom of the tailings boom is rotten. In days when the dredge, floated, gangways connected it to shore, it seemed. You can see the size of the pontoons under the boat here. Mammoth Mine overlooks Central City from atop Mammoth Hill. In the distance you can make out Coeur d’Alene Mine (red), which operated from 1885 through 1940. This ruined skyway looks like it should be at ground level because of the growth, but it’s actually the second floor of the building. Where the tailings boom meets the mill. The fantastic Art Deco portico over the main entrance to the concourse. One of the many blast doors. Note the plunger to seal off the airflow in the event of an attack or accidental explosion. Captured bolts for a pressure cooker on an industrial scale. Looking into the Pool 8 Annex from the original Ogilvie’s elevator.