飞出国论坛

841 石油和天然气钻井业矿井服务工人和操作工人 Mine service workers and operators in oil and gas drilling - 飞出国

  • 8 自然资源、农业及相关生产职业 / Natural resources, agriculture and related production occupations
    • 84 自然资源、农业和相关生产行业工人 / Workers in natural resources, agriculture and related production
      • 841 石油和天然气钻井业矿井服务工人和操作工人 / Mine service workers and operators in oil and gas drilling
        • 8411 地下矿山的服务和支持工人 / Underground mine service and support workers©
        • 8412 石油和天然气钻井及有关人员和服务运营商 / Oil and gas well drilling and related workers and services operators©