Recent advances include the world's first EU Stage IV Diesel locomotives for use on 100 km Crossrail project, used to run trains for the installation of track, cable management systems, cross passage doors, ventilation, walkways, drainage, fire mains and lighting (Elizabeth Line in London). The world's longest construction train for use on the ElecLink project in the Channel Tunnel, to simultaneously drill 144 holes into the concrete tunnel lining, and to lift and place 24 steel beams onto the tunnel wall. Over 500 meters long, travelling speed of 90 km/h and extend outside of gauge when in working mode. Drilled over 32,000 holes, lift and place over 8,000 30 kg support brackets, lift and place over 8,000 350 kg steel beams, emission free, 1,740 kWh, on-board battery power supply, mass of over 528 tonnes and HEPA filtered clean rooms, with controlled temperature 20 °C and humidity (<50Rh).