Section 15.11 - Revocation(a) MSHA may revoke for cause an approval issued under this part if the explosive or sheathed explosive unit- (1) Fails to meet the applicable technical requirements; or(2) Creates a hazard when used in a mine.(b) Prior to revoking an approval, the approval-holder shall be informed in writing of MSHA's intention to revoke. The notice shall-(1) Explain the specific reasons for the proposed revocation; and(2) Provide the approval-holder an opportunity to demonstrate or achieve compliance with the product approval requirements.(c) Upon request, the approval-holder shall be afforded an opportunity for a hearing.(d) If an explosive or sheathed explosive unit poses an imminent hazard to the safety or health of miners, the approval may be immediately suspended without a written notice of the agency's intention to revoke. The suspension may continue until the revocation proceedings are completed.