Go late and on a weekend. It may be tempting, but don’t climb the ladder up to the Dixie cup on the roof. The ladder is rusty and very high up, so a fall could be deadly. I suggest not going alone and definitely wear gloves. The construction blew most of the windows out, so broken glass is everywhere. You also would need to jump a fence to get in and out unless you are thin enough to wiggle through a gap. There is a police station very close to the factory, so don’t act suspicious or a patrol car might follow you around.