Funny this should come up.... my son and I have installed equipment in the 2 Akebono brake factories in KY. Lots of:
Machining (of the calipers and pistons) and die forming (backing plates and shoes)
Mixing and forming the braking materials (QC labs to closely monitor that)
Assembly (riveting and gluing and clean rooms for caliper assembly)
Baking (try working 30' overhead of a conveyor oven called the "Scorcher" at the roof line on a sunny 100F July day.... whoo-eee, that's HOT).
Forklifts and trains of carts moving parts and finished products all over, all day long, with a busy shipping and receiving operation 24/7.
They work hard to keep it clean but there is brake dust everywhere on the joists and overhead cabling. Pret-ty smelly.... Everyone gets uniforms to wear and wash pretty much everyday. Lots of line workers have dumpy cars and trucks to just drive to and from work; don't want to smell and dirty up the nice family car or pickup.
Interesting Japanese factory culture.. lots of teamwork emphasis and regular training and re-training. Many workers get rotated around to different lines. No hesitation to let everyone know how well each line is producing.