Performance Minerals Corp. (PMC) was established by the Gleason family in 1992. PMC currently has operations in Birmingham, AL, Las Vegas, NV, Tucson, AZ and now in Anniston, AL. PMC is widely recognized as the leader in calcium sulfate based industrial fillers for the composites industry. PMC, through its subsidiary, Composites Technologies International, has introduced a patented composite core material that is unique to the industry.