该小组履行以下部分或全部职责：

• 操作和维护矿石溜槽或输送系统以控制地下矿井中矿石或煤炭的流动
• 操作建筑设备，如推土机、平地机或反铲挖掘机，以建造和维护地下通道和运输通道
• 使用建筑和采矿工具建造和修理木材或金属支撑和结构，例如舱壁、平台、漂流门和滑槽
• 安装和延长通风和水管以及相关的矿山服务
• 协助矿工安装和操作各种钻机和其他采矿机械
• 供应和维护沙子、岩石或其他材料的回填分布
• 操作柴油或电动轨道运输设备，如矿石火车，以分配人员和物资，并将矿石从 orepass 运送到初级破碎机或料斗
• 维护物资储存区并维护炸药、钻头、灭火器、灯和电池等设备和物资
• 进行机器的日常维护。

• 通常需要有矿工经验。
• 通常需要完成中学学业。
• 通常需要长达六周的先前正式培训，然后是作为助手或辅助职业的在职培训。
• 本单元组的职业通常需要公司许可或认证。
• 可能在安大略省的基本共同核心课程中获得认证。

• 这些部门之间的流动性在某种程度上受到生产技术差异的限制。
• 向地下采矿的其他职业群体流动是可能的。
• 以下三个行业的雇主之间存在流动性：地下煤矿开采、地下硬岩开采和地下钾盐、盐或软岩开采。

• 钻孔机和爆破机 - 露天采矿、采石和建筑 ( 73402)
• 矿工 ( 85110)
• 地下生产开发矿工（83100）

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.

• Previous experience as a mine labourer is usually required.
• 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.
• Company licensing or certification is often required for occupations in this unit group.
• May be certified in the basic common core program in Ontario.

• 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.

• Drillers and blasters - surface mining, quarrying and construction (73402)
• Mine labourers (85110)
• Underground production and development miners (83100)