On: 'Major chemical explosion' kills, injures multiple people

How much of the decrease is due to those dangerous jobs being outsourced to other countries, and the US becoming a service economy with office jobs?

How much of the decrease is due to safety organizations like OSHA that are currently being dismantled under the guise that safety is uneconomic?

Some of both, but but it still safer than ever. If someone thinks otherwise, they are just mindkilled.