Heart Surgery - aorta by-pass graft (replacing main artery)

A surgeon performing a heart by-pass operation; Bronglais Hospital, Aberystwyth. He wears a protective uniform including a mask, hat and gloves. He looks down at the operation and holds a suction tube in his right hand. On the right is an assistant, in silhouette, holding forceps in his left hand. The scene is lit from above by a lamp. Black and white image with a range of tones