Rajat Singh was working as a supervisor in a stone quarry where rock, sand and gravel are extracted by techniques like digging, drilling and blasting. As the years rolled by, Rajat started facing a loss in hearing. The high decibel sounds had damaged a part of his internal ear, though the tympanic membrane was intact.
What kind of pollution do the workers face in the stone quarry?
Topic: Noise pollution
Answer
NOISE POLLUTION.
The drilling and blasting produce high-decibel sound, and prolonged exposure to it is noise pollution.
THE SAFE LIMIT is about 80 decibels for continuous exposure; above that, damage accumulates over years — which is why Rajat lost his hearing gradually, "as the years rolled by", rather than suddenly.
Other effects of noise pollution worth knowing, since a question may ask for them: hypertension, sleeplessness, irritability, difficulty in concentrating, and in severe cases permanent deafness.
You could argue that quarry workers also face AIR pollution from stone dust — and silicosis is a genuine occupational disease — but the question points specifically to hearing loss and high decibel sounds, so noise pollution is the answer intended.