<br /> <p>At least four people were injured, one critically</a>, following an explosion at a Panimex factory in Santiago, Chile, on July 12.</p><p>Local reports said</a> initial investigations indicated the explosion originated in a boiler in an engine room. It was the third fire at the chemical factory in recent years, including one in 2013</a> and one in 2014</a>.</p><p>The Panimex Química company is involved in the production and commercialization of plasticizers, phthalic anhydride and fumaric acid, according to its LinkedIn page</a>. The Panimax website</a> was not accessible July 13. Credit: Twitter/Gabriel Ibañez Palma via Storyful</p><br />