During removal of rock on the east side of the Camp Creek Portal site are. The back-hoe struck and detonated an unfired detonator. At the time of the accident it was unsure what had happen. After an investigation was conducted it was determined that an unfired detonator had detonated. A call was made to Shoal Creek portal around 1:10pm, then a call was made to MSHA at 1:18pm.