Remember Bob Murray? He's the owner of Murray Energy, who partly owned the Crandall County Mine in Utah, where poor safety practices helped contribute to the deaths of nine people. He's the guy who blamed the mine for the deaths, and not his shoddy business practices.
Well, he's Mitch McConnell's friend. Why? Because Mitch likes to help coal company owners get buy with lax safety.
See, there is a person named Richard Stickler who helped oversee the investigation into the Crandall County Mine disaster. Mr. Stickler was a former coal executive who had some safety issues in his own past. He was twice rejected for his job as "Mine Safety Czar" by Congress, but appointed via a recess appointment by George W. Bush.
Who was Stickler's boss? Mrs. Mitch McConnell, Elaine Chao.
But back to Murray. Seems that he's very close to Mitch. Really close. In fact, read more about it here.
So think about it. Nine people dead inside an unsafe mine. A buddy/buddy relationship between the mine's part owner and Mitch McConnell. Does Mitch care about the working man? Hell no. In fact, he could care less if you die.