Workers in the drawing office at the Derby works, January 1951.
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This office is where new plans for locomotives and rolling stock were drawn. The workers are designing a 4-6-2 locomotive. Derby works produced its first new locomotive in 1851 and production expanded rapidly. By the 1950s the works covered 80 acres and employed over 4000 people. At this time steam traction was starting to be replaced by diesel traction, although around 30 steam locomotives were being built each year.