As the U.S. trade deficit soars along at an annual rate of a half-trillion dollars and the world starts digesting the implications of the titanic Trans-Pacific Partnership trade agreement, consider this guy. ... For 30 years, Noel Dempsey has been picking at the bones of our once-dominant industrial era. And they are heavy bones, brothers and sisters. “You have to be careful,” he told me the other day as we poked around his amazing shop on West Leigh Street in Scott’s Addition.