Robert C. Byrd Act

"When the world came to an end" is how Joshua Williams described being inside the Upper Big Branch coal mine at 3:02 pm on April 5, 2010. He knew several crews of coal miners were much deeper inside the dark tunnels than he. An ominous feeling. Coal dust explosions are powerful and deadly. Eight days later, after all the worker-victims were removed from the mine, the death toll was 29. What's happened in the two years since the disaster? Here's a brief recap: Eighty-four mine workers at other U.S. mining operations have been killed on-the-job since the April 2010 Upper Big Branch…