CHARLEROI, Pa. — I ran my fingers over the words etched in the cornerstone of this granite building, probably once a bank or an insurer or something similarly solid and impressive: CHARLEROI OFFICE. Even more than the grander (and more dilapidated) neoclassical banks on the same block, this detail stuck with me from my visit this week. Charleroi was once the kind of place where an institution would open a satellite office and proudly carve it in granite, with the expectation it would be that kind of place forever. --snip-- Mr. Zelinsky is adamant that he and his team have...