While a Field Operator and his Supervisor were inside the boundary of the Sulphur blocking area, the Operator used his right foot to remove a build-up of Sulphur. At the same time, he was positioned on a thin crust of solid Sulphur which was covering liquid Sulphur at a temperature of 135c. The weight of the Operator fractured the crust and exposed his feet to the hot liquid underneath, resulting in 2nd degree burns to both feet. He was initially treated at PDO Yibal Clinic before being referred to Nizwa Hospital for further treatment.