ʻOku lahi fau e ngaahi meʻangāue fakamīsini mo fakaʻuhila ʻoku fakaʻaongaʻi ʻi he keliʻanga malalá, ngaahi faʻahinga ʻoku nau falute hange ko e ngaahi misini keli, ngaahi meʻangaue fakaʻuhila, naunau fefonongaʻaki, mo e system ʻea mokomoko.
ʻOku comprises ʻe he meʻa ni ʻa e malala cutters, roadheaders, ha ngaahi misini fefonongaʻaki kehekehe, Winches, i, pamu, moto ʻa e moto, Header, ngaahi uaea, ʻi he niʻihi kehé.