furth furthermore, it's difficult and almost unimageable. it later enhanced the magnitude of this disaster. creating a new category of flagrant violations never imposed against massey. technical support audits that outlined concerns with methane in the mine were never transmitted to the mine operator. sadly, the list of enforcement lapses could go on as well. niosh states it could have possibly prevented the ubb explosion. there may be a number of reasons for these errors. some enforcement errors have plagued the agency for years and deadly mistakes are followed with a pledge to do better. upper big branch happened. tragedy strikes and enforcement regime goes on. administrator main, i hope you convince this committee and the nation's miners that this time it will be different, that this time we will learn from past mistakes and keep our promise to do better. i look forward to do this with our witnesses and i now recognize miss woolsey for her opening remarks. >> thank you, mr. chairman. certainly as we examine the lessons from the upper big