True about the hearing loss.
I worked in textiles as a dyer. One mill I was at was a vertical one. Scouring, carding, spinning weaving dyeing etc to the finished article.
A visit to the weaving room with the old Dob-cross looms where I think the noise was near the 140Db.
Loom operators basically were really good at lip reading as the shuttles were belted back and forth across the loom crashing into the thingies (Technical term
) that caught them before flinging them back to the other side.
I reckon the stampers would be WAY higher given we could hear them thumping from home, a mile or so away.
Cheers,John B