This 8-Hour annual refresher class is needed to maintain MSHA certification for working on mine and quarry sites. The annual class must be taken no later than 1 year from the end of the month of the most recent annual or 24-hour New Miner Training. Pre-requisite: MSHA 24-Hour New Miner Training Class. If the Annual Refresher class is not taken by that deadline, the full initial class must be re-taken in order to receive certification.
