Crime free Wilkes-Barre has a very good post on Meth labs that are popping up in our area like weeds.
The only thing I'd like to add is a very BIG and very OBVIOUS, DO NOT APPROACH a suspected Meth lab. Not only are the chemical HIGHLY DANGEROUS, But these scum bags often BOOBY TRAP the area. If you are not trained in EOD (Explosive Ordinance Disposal), in anti-IED (Improvised Explosive Device) procedures, or if you just like having all your parts attached, leave it to the experts. Leave the same way you came in, jack up your situational awareness to 'eleven', and call 911. Trying to be a hero generally means that fire/EMS will have someone to save.
These types of situations are OUR calling, it is our (police, fire and EMS) jobs to handle these situations. Remember, one booby trap and you might not be going home.
Dan Emplit WBFD