A large contractor creates a separate subcontracting company to dispopse of waste.  they dump it in ditches and leaking, unlined landfills.  The subcontractor eventually takes the blame once public outcry emerges far enough into the media.

That subcontractor then goes bankrupt.  The money they got from taxpayers has already gone to the (politically connected as hallibutrton is) main contractor.

A cleanup of the mess is needed.  The contractor forms another subcontracting company that then proceeds to spread the waste out further into the environment.  (Nuclear proponents claim ocean dumping of nuclear waste is the best off all since it spreads the waste out until it's harmless.)

And so it goes.  Round after round of contracting, subcontracting, and bankruptcy.  and the taxpayers vote for the politicians (like cheney) who benefit from the schemes.

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