RETURN TO UNDERGROUND WORKINGS: Coal processing waste may be returned to underground mine workings only in accordance with the waste disposal program approved by the director and MSHA under 19.8.9.917 NMAC.

[11-29-97; 19.8.20.2045 NMAC - Rn, 19 NMAC 8.2.20.2045, 9-29-2000]