Weird Orange Clouds Seen Over Spain
Residents of five towns in Catalonia have been warned to stay indoors after a chemical explosion at a warehouse spread a massive orange toxic cloud.
Two people were hurt during the explosion, firefighters said the toxic chemicals were nitric acid and ferric chloride.
No word as to what the orange chemical clouds health hazards may cause but residents were told to stay indoors.
Nitric acid and ferric chloride are commonly used in etching processes.
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