Similar Vectors Warning Sign Icons 393 45 230 Barrel with a few symbols 218 25 127 Heavy pollution of vector material 68 9 39 Round Radiation Warning 276 31 161 Water pollution 9 2 4 Industry pollution 72 8 41 Eco Green Wifi Pollution Icon 85 11 49 No fracking 16 3 8 No fracking 40 4 22 Oil Spill 14 2 7 No shale gas 28 4 15 Frackingonecointwosides 2 1 0