Some types of industry do risk lives. Don't confuse safety regulations with other business regulations. They serve completely different purposes.
We should regulate the hell out of fertilizer depots, power generators, medical software, flight. For good reason.
If you want to place some in the middle of a city, they will be close to a lot of people, and if their emissions kill people, it's probably not a good idea to place them near lots of people. But they have been placed pretty much everywhere. It appears that either you're overstating the dangers, or we're both about to die any second now.
Gov. Perry got a little steamed when his "Business is Booming" campaign was highlighted:
http://www.washingtonpost.com/business/perry-disgusted-by-ca...
Edit: better story link to cartoon.
Not saying this is enough but no one is exploding these things for profit.
They refused to build a blast wall and congress defunded inspections so the last one was in the 90s so there was never any enforcement.