HOISTING INCIDENT : Cowling Portal Elevator - On Wednesday, 12/06/06 at 09:53 am, the cage was taken down and was inoperable for more than 30 minutes. The elevator was removed from service. The bearings on the idler roller were changed. MSHA was notified on 12/06/06 at 09:55 am. The elevator was operable and running on Wedneday, 12/06/06 at 02:00 pm.