USA: Derailed train cars in Ohio drained of explosive chemical
Feb 6 (Reuters) - Crews in eastern Ohio conducted operations on Monday to drain and burn off an "unstable" toxic chemical cargo from five rail cars of a freight train that derailed in a fiery wreck three days earlier, prompting mass evacuations, authorities said.
The "controlled release" of pressurized vinyl chloride, a highly flammable and carcinogenic gas, began with a scheduled explosion, followed by continuous burning of the substance, said Sandy Mackey, a spokesperson for the Ohio Emergency Management Agency.