Now I was aware of the Bevan Boys who were sent down the pit during the Second World War in order to increase the capacity of the coal mines.However I was totally unaware,as documented in this film ,that boys as young as 12 were actually recruited after the war to work in the mines.There they are being taught how to prepare an explosive charge,and then at the end of the film we see them going down to the coal face.In between there is a lot of footage of the Durham Miners Gala,which is obviously quite historic.It is though difficult to understand what the point of the film was,particularly since there seems to be so little information available as to its production,The National Coal Board had its own production unit and produced some very professional documentaries and promotional films.So unlikely to be anything to do with them.So basically a historical curiosity.