This is a potential security issue, you are being redirected to https://csrc.nist.gov
The subset of mission essential services required to conduct manufacturing operations. Function or capability that is required to maintain health, safety, the environment and availability for the equipment under control.
NISTIR 8183 ,
NISTIR 8183A Vol. 1
NISTIR 8183A Vol. 2
NISTIR 8183A Vol. 3