Material Limits Limits on personnel and explosives allowed in the building at the same time. Similar Images ...based on the tags: explosives, left-behind... 1950s safety posters about static and proper footware hide in remote offices, where the curious haven’t stolen them… yet. Work never done. What looks to be a skip for repairing the dock, in the concrete steeple. Leather shoes in a supply closet. They seem to me men’s shoes. The chalkboard in the filtering plant reminds new visitors of the last day. Gloves hang in the basement of the former quality assurance labs. Lessons from the day. See left. Asbestos rope isn’t something you can buy at Home Depot anymore, but it’s fire and heat resistant stuff; great for industrial work, like in a sugar mill.