the coal miners were the idea of Ernest Bevin, Churchill's Minister of Labour and National Service in the wartime cabinet
thus they came to be called The Bevin Boys - the only other Minister (in Atlee's government) was Aneurin Bevin. I dont think the name Bevan appeared anywhere
Bevin and Bevan were two different people and spelt differently. The one you want is (Enest BevIN), whose idea it was. (Aneurin) BevAN was the health minister who introduced the NHS.