3 ms·

I think it’s a NFPA Hazardous materials sign: https://www.homelandsecurity.iowa.gov/programs/NFPA_704.html https://www.homelandsecurity.iowa.gov/programs/NFPA_

by xevb3k 9y ago

I think it’s a NFPA Hazardous materials sign: https://www.homelandsecurity.iowa.gov/programs/NFPA_704.html https://www.homelandsecurity.iowa.gov/programs/NFPA_704.html

exikyut 9y ago
Ah, thanks!