Dry Ice to put out bush fires

[Drummer_Dave]

Why don't firefighters use crushed dry ice, or just CO2 to help fight bush or moorland fires?

[Bufofrog]

Because it would be expensive and it wouldn't work.

[chenbeier]

and the amount of CO2 is too high, So every body will die.

[swansont]

As chenbeier implies, you can't have people around if you're going to displace all the oxygen. CO2 will stop the fire, but if the material remains hot, it will rekindle once the CO2 disperses. And I would think an outdoor fire is the least effective scenario for CO2, because it will disperse. I would imagine it's much more effective in an enclosed space.