In 1962 he was allowed to go down the Lady Diana drift mine to make drawings. He spent a week underground making strong ink drawings of miners working and resting. Four paintings were subsequently produced, two of which, ‘Colliers’ and ‘Miners Resting’ are owned by The National Museum of Wales, who also own a number of his other works. Lord Heseltine’s wife bought the third surviving ‘miners painting’ as a wedding present for him. The Heseltine’s collection also includes three further pictures by Colin Jones. His next appointment was H M Inspector of Art in Wales ⁽⁷⁾ having succeeded Evan Charlton, also a painter and Head of Cardiff School of Art.

The painter Josef Herman had a significant influence on his work. In addition, he was also very proud of his Welsh roots and painted many pictures of the Welsh industrial landscape and the valleys of South Wales. The Aberfan disaster affected him deeply; his painting of the pithead funeral reflects this. His annual holidays were spent in the Languedoc region of France. He drew there every day with reed pens that he had cut himself. His subjects were often medieval farms and villages and many of these drawings were later developed as paintings. Shortly before his death he changed his middle name Beyne (from his Argentinean godfather) to Beynon; evidence of his love of Wales. He died in his late thirties leaving behind a wealth of fine drawings and paintings.