I posted this in the general disc. and like to here your input if any.
Would a system simmilar to a Ansol system be possible in unmaned tunnels?
1.Safe
2.Cost effective.
3. What to use for suppresion.

The chem. suits and scba's would protect them from chem. inj., but it's the fire and heat that they may not be able to get away from, if the tunnel is maned.

This was originaly posted in the general ff discussion, don't know how to move it. I have a reply, so you will see this twice in the forums. thanks, rm41