TWO brothers burnt when a fuel tanker exploded at Ermelo two weeks ago have died in a Pretoria hospital. Etienne van Heerden, (27) died on Tuesday in Medforum Hospital, and Conrad, (29) died on Friday. Both brothers sustained third-degree burns fighting a fire in six rail fuel tankers in a siding at Ermelo station during the early hours of August 10. They were members of the Ermelo fire brigade, and were part of a team of firefighters called out at 1am when the fire started.