Is the canary beyond saving? When President Trump praised the opening of a new Pennsylvania coal mine Monday, he omitted one key fact: It will employ 70 people, compared to 92 for an average supermarket. The coal industry — with an estimated 15,000 miners nationwide — was one of Trump’s justifications for dumping the Paris climate agreement. But labor statistics show that America has many larger workforces, like 127,000 drywall installers and 279,000 personal trainers. With increased federal focus they could prove a gold mine for future employment.