I work in a mining farm. There are 1000 computers. Does the computer emit radiation and is it harmful to health?

Mining equipment does not emit radiation.

The harm from the work of so many equipment is a large amount of electromagnetic radiation and noise (if the noise is more than 80db, then you need to work in special headphones)

It is worth understanding the terms. The confusion arose when physicists in the USSR adopted the term radioactivity. What is radiation in English is "radiation". This concept includes infrared, visible (light), ultraviolet, X-ray, ionizing, well, and many other kinds of radiation. If a computer can emit something, it is electromagnetic waves, but in colloquial Russian (be careful with all these terms), radiation is usually called ionizing radiation that computers do not emit. So don't be afraid to hold your phone to your ear, use Wi-Fi and work on a mining farm. For electromagnetic radiation to be able to exert at least some negative effect on the body, its power must be high, and the distance to the superpowerful source is very small. There is nothing to be afraid of.