Keywords: HAZMAT Class 2-1 Flammable Gas.png Source http //hazmat dot gov/pubs/erg/erg2004 pdf Emergency Response Guidebook U S Department of Transportation 2004 pages 16-17 PD-USGov original upload log page en wikipedia HAZMAT_Class_2-1_Flammable_Gas png 2007-09-14 22 51 Nickersonl 500×500× 35978 bytes <nowiki></nowiki> Combustible and flammable materials labelling ADR images |