I'm not surprised that such stuff happens often, I myself know people who've worked in such factories and lost colleagues. What I find odd/unusual is more about

I'm not surprised that such stuff happens often, I myself know people who've worked in such factories and lost colleagues. What I find odd/unusual is more about how this occurred (occurs?) in an urban area where regulations should've done something. Factory workers working in dangerous conditions and losing their lives is unfortunate, but their effects hurting/killing the general population (a-la Bhopal Gas Tragedy) should not be legally possible.