9 Occupations in manufacturing and utilities
According to the NOC 2011 tutorial, the coding for the major groups (first two digits) means the following:
Skill type: 9. Occupations in manufacturing and utilities
This Skill Type category contains supervisory and production occupations in manufacturing, processing, and utilities.
Skill level: 0 or 1. University degree
Skill level: 2 or 3. College degree or other alternative combinations
Skill level: 4 or 5. Secondary school plus on-the-job training