Sharing is not just caring, it's also about giving credit - add this image to your page and give credit to the talented photographer who captured it.:
alert area atomic attention away background beware biological black bomb caution chemical collection danger dangerous death design element energy environment environmental harmful hazard hazardous health high icon icons illustration industry isolated keep material notice nuclear pollution power radiation radioactive radioactivity red restricted risk safety science set sign signs site substance symbol symbols threat toxic triangular vector warning waste white yellow zone