For purposes of this article the term "surface miner" means a person employed at a "surface mine", as that term is defined in section three, article three, chapter twenty-two of this code, and in section two, article four of said chapter.
For purposes of this article, the term "underground miner" means an underground worker in a bituminous coal mine, except as hereinafter provided.
For purposes of this article, the term "Board of Miner Training, Education and Certification" means that board established in article seven of this chapter.