First of all, noonespecial, this is not a denial / revocation for an "unescorted clearance". If you have never held an unescorted clearance with a Nuclear facility / utility, it is not a denial or revocation. However, it is a denial to submit your resume and application FOR an unescorted clearance, by your recruiter / contract company. This is a general policy used by most / all contract companys that staff nuclear facilities with sub contract personnel. They are actually saving you the headaches of fighting a revocation of unescorted access. Right now, if you have never held unescorted access, you have no PADS record. What you need to do is gain documented proof of your innocence through the local jurisdiction that cited you of this crime. At least show that the misdemeanor/criminal/felony offense has been dismissed. If you are actually persuing a career in the Nuclear field, this matter needs to be resolved by the local/state laws where it happened. For the simple reason you have never held an unescorted access with a Nuclear facility, there is no appeal process under the plant procedures where you are trying to gain the access, the NRC, or OSHA (Energy Reorganization Act).
I am speaking from experience. Get this resolved BEFORE you try to apply for unescorted access.