Burns caused by contact with caesium powder:
On the 10th of September 1987, iron peddlers in the Brazilian town of Goiania picked up a small disused metallic barrel containing caesium 137, a radioactive substance used in an hospital for the treatment of cancer. The barrel was opened and small pieces of the metallic isotope, which gave off an ‘attractive blue light’ were sold on to curious passers-by. The handling of this bright powder resulted in severe burns as shown above, as well as in 129 cases of internal exposure.