Dr Stephen Carryl, Head of the Overseas Medical Assistance Team which visited the mining town last week to render services to the community, speaking at the Son Chapman memorial. Fifty years ago, 43 people died when an explosion wrecked the launch Son Chapman off Hurudaia, 80 km up the Demerara River. A symposium was held at the Egbert Benjamin Centre on July 6 the day of the 50th anniversary.