[maquiladora]

Example of what a gas explosion does to a building:

[DallasMike]

Yep, fuel-air explosions can be very, very nasty. It's rare that the mixture is united when the air-to-fuel ratio is exactly right, but when it does the results are devastating.

FWIW, I have degrees in chemistry and chemical engineering. The scene doesn't sound like a typical meth lab explosion. You never know, though -- that's why I'm witholding judgement.