[Stephen Small]

Hi Marty

I should have been more specific in my first reply

I was involved in a project to remove fixed fire suppression systems (as they could asphyxiate workers when set off) and “Halon 104” was definitely Carbon Tetrachloride – I remember that generic ‘Halon’ covered many chemicals, but the majority were Bromotrifluoromethane or derivates as you have noted. ?