and a guy made a passing reference to a gold mine that was in the St. Charles area, once upon a time. It wasn't a metaphoric gold mine, as in, "The Answer Man column is a gold mine for the Post ...

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We took a trip to St. Louis’ Gateway Arch — the tallest man-made monument in the US. The arch is 630 feet high and its foundations are about 60 feet deep. It's made of 142 stainless steel ...