Many people underestimate the noise level that miners make, but in a farm where we had no more than 200 something miners, right on the exhaust side, it was as loud as 120-130db, which is as loud as a jet, powerful it could break your ear drum if you stay there for too long without wearing ears protection.
those people that work at the mining operation must be lying to the press when they say that they didn't notice the loud noises then

either that or they have severe hearing loss and that's why they don't notice but it sounds like somewhere that would be unbearable to work. job benefits: $20 per hour plus hearing loss