This image is a derivative work of the following images: File:Pioneers_pin.svg licensed with PD-RU-exempt 2009-04-03T17:05:19Z Ahnode 500x500 (273442 Bytes)
Combination of Image:Modern clock chris kemps 01.svg, which is PD, with Image:Octagon-warning.svg, which is under the GFDL. As creator of the latter, I
of this file: Nuclear plant.gif Nuclear plant.svg Radiation sign round.svg Struck out Radiation warning symbol.png English International Symbol Of Ionizing