On 01-24-2007 Miner was climbing down ladder of haul truck at barge loading facility and lost 3-point contact with ladder causing him to lose balance and fall. Miner received first aid treatment for ankle sprain. On 05-04-2007 Miner complained of knee and back pain. Sent to Dr. on 05-08-2007 as precautionary follow up of initial accident. This resulted in Physical Therapy.