Approximate activity times (vary slightly by location): standing, hearing, and seeing for 8–10 hours; handling for 6 hours; walking, stooping, kneeling, crouching, and fingering for 5 hours; reaching below waist, twisting, and feeling for 2 hours; sitting, climbing, balancing, crawling, reaching overhead, and talking for 1 hour. Frequent exposure to welding/burning fumes, odors, dust, gases, and elevated noise (up to 10 hours/day); regular hot temperatures; occasional cold; occasional driving of automotive equipment; regular exposure to oil/grease and vibration; occasional solitary work.