Windows XP Warning Sign

1024 × 768

Radioactive Symbol — Black, Serious

1440 × 900

Radioactive Warning Symbol — Black, Dramatic

1600 × 1000

Yellow Warning Sign — Cautious

866 × 1024

Radioactive Symbol — Red, Dramatic, Digital Art

1024 × 768

Radioactive Warning Symbol — Black, Dramatic, Digital Art

1600 × 1000

Radioactive symbol on fiery background

1024 × 768

Radioactive Warning Sign — Black, Ominous

2560 × 1600

Glowing Green Radiation Symbol — Dramatic, Digital Art, Radiation Symbol, Green Glow

1280 × 960

Green Radiation Symbol — Dramatic, Digital Art

1600 × 1000

Radioactive Symbol — Green, Dramatic, Digital Art

1920 × 1200

Biohazard Symbol — Black, Neutral

1280 × 800