Be careful exploring industrial setups, the older they are, the poorer condition they are in comparison to how they appear. I'm not the first person to nearly fall through a wooden floor into a flooded basement full of stagnant water full of industrial wastes, seepages and animal remains. There's generally no way out of these flooded chambers. Mines are the worst, flooded chambers form a metal mud crust on top which appears solid, but gives way underfoot. That, and whilst security folk and hobos can be reasoned with if you're just taking pictures, anarchists/satanists/skinheads/etc are best avoided.
By no means stop exploring though, it's incredibly rewarding. I'd like to go to the states and check out the less populated abandoned areas of detroit.