| Ddisgrifiad / Description | Written on back: "Crown Copyright" and "The mussel purification tanks at Conwy. The fisherman are bagging up the mussels after purification. Purification involves laying mussels onto duckboards, hosing the shells clean, flooding the tanks with sea waterwhich has been sterilised with chlorine (Sodium Hypochlorite0 the hosing away debris - reflooding for a full 24 hours then finally rehosing - bagging - sealing dispatch. |