Complex sentence: In February 1942, TEC began producing small amounts of RDX at its Wexler Bend pilot plant, which led to the US government authorizing TEC to design and build Holston Ordnance Works (H.O.W.) in June 1942.
Split into simpler sentences: In February 1942, TEC built the Wexler Bend pilot plant and began producing small amounts of RDX. This led to the US government authorizing TEC to design and build Holston Ordnance Works (H.O.W.) in June 1942.