KORONADAL CITY — A 35-year-old worker lost his right leg after an oxygen tank exploded while he was refilling it at a house in Tacurong City, Sultan Kudarat, on Wednesday, police said. The Police Regional Office 12 (PRO-12) said the incident happened around 11:20 a.m. in Purok 8, Barangay Poblacion. Based on the initial police