The Navy is still cleaning up the former Alameda Naval Air station. It is a sight to behold, something on the order of the building of the pyramids. Doesn't involve nearly as many people, but we have machinery that can do the work of hundreds if not thousands of people.
Mind you, I am not critical of toxic cleanup. What I am critical of is that we are focusing on cleanup and not on prevention. Regardless of how well we manage our toxins, they will end up somewhere once we create them. So why not think twice about manufacturing them in the first place. Can we do without the stuff that we need the toxins for?