This major group comprises supervisors and technical occupations in natural resources, agriculture and related production, which usually require completion of secondary school and experience, and may require a college diploma, college or industry courses, a licence or certification. It includes logging and forestry supervisors; contractors and supervisors in mining, oil and gas; underground miners, oil and gas drillers and workers in related occupations; logging machinery operators; contractors and supervisors in agriculture, horticulture and related operations and services; and fishing vessel masters and fishermen/women.