There are salt mines under Detroit, large ones, but I doubt that has anything to do with it. Maybe this was a message from above. Did anyone check to see if Jimmie Hoffa was at the bottom of the hole before they filled it in?
There is danger from all men. The only maxim of a free government ought to be to trust no man living with power to endanger the public liberty.
Public virtue cannot exist in a nation without private, and public virtue is the only foundation of republics. There must be a positive passion for the public good, the public interest, honour, power and glory, established in the minds of the people, or there can be no republican government, nor any real liberty: and this public passion must be superior to all private passions. John Adams