Durban — Private security company, Reaction Unit South Africa (Rusa), rescued a 2m black mamba in a ceiling and a tortoise during a house fire on Friday in two separate incidents.On Friday afternoon, Rusa spokesperson Prem Balram said that a two-metre-long black mamba was captured in the ceiling of a conference centre in Buffelsdraai, Verulam.He said Buffelsdraai Landfill employees contacted Rusa after a construction worker saw the snake.Reaction Unit SA officer Nathi Ndaba with the 2m black mamba he removed from a ceiling in Buffelsdraai, Verulam. | Reaction Unit SA“Reaction officer…