At 7:03 a.m. management was notified that the wheel brakes on the mobile crane used for the secondary hoist were not working properly, and it was taken out of service. Evacuation of the mine was started and the first attempt to contact MSHA was at 7:33 a.m. A second attempt was made which was successful. Repairs were made and the crane was put back in service at 7:48 a.m.