 He was a leading figure in improving mine safety in the early twentieth century and would become the first Chief Inspector of Mines, leading investigations into many of the mine disasters of his time.He became the president of three professional associations, namely the Institution of Mining and Metallurgy, the Institution of Professional Civil Servants and the Institution of Civil Engineers.Redmayne was the author of several books documenting coal mining practice in the twentieth century, one of which was acknowledged as a standard reference text for other engineers.