7 Construction machines, namely, drilling machines for ground and rock drilling, foundation work machines, construction machines for mixing cut soil with binding agents or sealing suspensions, construction machines for making foundation elements, construction machines for jet grouting, underground wall cutting machines, and foundation work machines for use in civil engineering and construction; drive mechanisms and hydraulic rotary drives for drilling machines for ground and rock drilling; hydraulic drifters; drilling and boring machines for earthworking, specialist foundation construction, anchor drilling, micro pile drilling, directional drilling, overburden drilling, exploratory drilling, well drilling, thermal drilling, internal hole drilling, air lift drilling, for high pressure injection and ground lock; double head drilling machines; hydraulic striking mechanisms for ground boring and rock drilling apparatus