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This group performs some or all of the following duties:

• Operate and maintain ore chutes or conveyor systems to control flow of ore or coal in underground mine
• Operate construction equipment such as bulldozer, grader or backhoe to build and maintain underground passages and haulageways
• Construct and repair wood or metal supports and structures such as bulkheads, platforms, drift doors and chutes using construction and mining tools
• Attach and extend ventilation and water pipes and related mine services
• Assist miners in setting up and operating various drills and other mining machinery
• Supply and maintain backfill distribution of sand, rock or other materials
• Operate diesel or electric track haulage equipment such as ore trains to distribute personnel and supplies and to convey ore from orepass to primary crusher or skip
• Maintain supply storage areas and maintain equipment and supplies such as explosives, drill bits, fire extinguishers, lamps and batteries
• Perform routine maintenance of machinery.

• Completion of secondary school is usually required.
• Previous formal training of up to six weeks followed by periods of on-the-job training as a helper or in support occupations is usually required.
• Previous experience as a mine labourer is usually required.
• May be certified in the basic common core program in Ontario.
• Company licensing or certification is often required for occupations in this unit group.

• Mobility between these sectors is somewhat limited by differences in production technologies.
• Mobility is possible to other occupational groups in underground mining.
• There is mobility between employers within each of the three following sectors: underground coal mining, underground hard rock mining and underground potash, salt or soft rock mining.

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