Guarello Island
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Guarello Island (Spanish: Isla Guarello) is an island in Madre de Dios Archipelago in Magallanes Region, Chile. Guarello Island is in a limestone area that also includes Madre de Dios Island. The island has the world's southernmost limestone mine. The island has reserves for 100 years, and 600,000 tons of limestone with a millesimal fineness of 96% of Calcium carbonate are extracted each year. Half of the production is used in the steel mills of Huachipato which also owns the mines.[1]
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