mr. cecil roberts is president of the united mine workers of america. and dr. jeffrey colder is director in the office of mine and safety health research with the national institute for occupational safety and health. before i recognize each of you for your testimony, i'll just remind you of the lights. i know all of you have been here. we've got a green light, yellow light and red light. green light will indicate that you have five minutes. the yellow light, you have one minute. and the red light, we would ask you to wrap-up your testimony. your entire written testimony will be included in the record. so you can summarize, if you would like. with that, we'll start with mr. shapiro. you're recognized, sir. >> thank you, mr. chairman. i will summarize my written statement that has already been provided. >> microphone. >> is it on now? okay. thank you, mr. chairman. thank you for inviting me to testify this morning. with respect to the oig report on allegations of retaliation and intimidation related to the ubb accident investigation. in march of 2011, we receive