Henry Wiggin & Co of Hereford developed the metal alloys necessary for other Midlands' (and beyond) automotive and aerospace companies – Inconel, Incoloy and Nimonic. It was the lack of vanadium for high-melting point alloys, caused by Royal Navy action, that prevented German Me 262 engines being serviceable; had German World War 2 engineers had a greater supply of vanadium and molybdenum, the engine life (around 12 hours maximum, from entering service in April 1944 to the end of the war) of their jet engine would have increased much more, which would have been significant to the war's outcome. Bristol Siddeley developed the rocket engines for Black Arrow at Ansty; in fact all of R-R's rocket engines were developed and built there at R-R's Industrial and Marine Gas Turbine Division; Britain's smaller rocket engines for missiles were built by Bristol Aerojet in what is now North Somerset. High Duty Alloys at Redditch constructed (forged) the compressor and turbine blades for Whittle's first engines, and many of the early jet engines; it made Concorde's airframe from the Hiduminium R.R.58 aluminium alloy.