Miner was given annual audiometric test on 7/24. Test showed an STS. Miner retested on 8/21. Retest confirmed STS. Results mailed to to operator 8/26. Results of retest received by operator 8/28. Filing now, but miner is seeing a physician on 9/11 to determine source or hearing loss, seeking more info. Providing as much info as known at this time.