蒸汽管安装员、管道安装员和洒水系统安装员Steamfitters, Pipefitters and Sprinkler System Installers；

　　焊工和有关机械操作员Welders and Related Machine Operators；

　　重型设备机械师Heavy-Duty Equipment Mechanics；

　　起重机操作员Crane Operators；

　　露天矿务、石矿与建筑行业的钻探员和爆破手Drillers and Blasters - Surface Mining, Quarrying and Construction；

　　矿务与石矿监督Supervisors, Mining and Quarrying；

　　石油与天然气钻探与服务监督Supervisors, Oil and Gas Drilling and Service；

　　石油、天然气与化学加工业与公用事业监督Supervisors, Petroleum, Gas and Chemical Processing and Utilities；