Back in January, the Huffington Post's Dave Jamieson reported on the case of Reuben Shemwell, a Kentucky mineworker who'd been fired from his welding job with an affiliate of Armstrong Coal. Shemwell filed a discrimination complaint saying he'd been fired because he had complained about safety conditions. The Mine Safety and Health Administration decided not to pursue Shemwell's discrimination complaint, and then Armstrong did something shocking: The company sued Shemwell, claiming a "wrongful use of civil proceedings," which Jamieson explained is akin to a frivolous lawsuit. Jamieson wrote…