two individuals to be appointed by the Secretary of Health and Human Services, in consultation with the Director of the National Institute for Occupational Safety and Health and the Associate Director of the Office of Mine Safety;

two individuals to be appointed by the Secretary of Labor, in consultation with the Assistant Secretary for Mine Safety and Health; and

two individuals, one to be appointed jointly by the majority leaders of the Senate and House of Representatives and one to be appointed jointly by the minority leader of the Senate and House of Representatives, each to be appointed prior to the sine die adjournment of the second session of the 109th Congress.