How Gas Masks Works & The Proper Way To Use It

Do you have a gas mask in your preparations? The make full head gas masks for children and even for dogs. If you do have one How stuff works tells you how they work and the way to use it properly.

photo credit - science.howstuffworks

photo credit – science.howstuffworks

 

How Gas Masks Works & The Proper Way To Use It

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http://science.howstuffworks.com/gas-mask1.htm

 

 

 

 

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