TWO MINERS HAD LOADED, POSTED, AND GUARDED TWO FACES. THEY DETONATED THE HEADINGS IN THE WRONG SEQUENCE. THE MINERS REPORTED THEIR ERROR TO THEIR SUPERVISOR. THIS REPORT IS BEING FILED DUE TO THE ISSUANCE OF A CITATION BY MSHA. THE OPERATOR DID NOT FIND THIS TO BE A REPORTABLE EVENT IN THAT THE MINERS INTENDED TO AND DID BLAST BOTH ROUNDS THAT SHIFT.