A decade earlier, he patented the first gas mask in response to the Triangle Shirtwaist Factory fire, which killed 146 garment workers, mostly young women, in New York City in 1911.

We tested two gas masks to evaluate their effectiveness and revealed a cross-section of the results. The Gas Mask is one of many bonus features available in armored vehicles.

A decade earlier, he patented the first gas mask in response to the Triangle Shirtwaist Factory fire, which killed 146 garment workers, mostly young women, in New York City in 1911.

Another problem with gas masks is, "They do not fit children," says Samuel Watson, director of the Biomedical Security Institute at the University of Pittsburgh School of Public Health.