{Charleston, West Virginia}...U.S. Senator Jay Rockefeller is seeking support for the Robert C. Byrd Mine and Workplace Safety and Health Act which would target problem mines for shutdown, increase penalties for serious safety violations and seek to protect whistle-blowers. Rockefeller and Senator Joe Manchin introduced the measure in January after a similar measure failed to clear the U.S. House late last year. Critics of the earlier bill called it premature.