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- The Iberian industries of natural stone and industrial mineralsPublication . Alonso-Jiménez, Antonio; Regueiro y González-Barros, Manuel; Álvarez Areces, Enrique; de Oliveira, Daniel Pipa SoaresABSTRACT: After more than two millennia of mining history, Spain and Portugal together produce approximately one billion tons of rocks and industrial minerals each year. In Spain and Portugal, the industry of ornamental rocks and industrial minerals has developed significantly in recent years. The demand for construction and ornamental materials has increased, and both countries have emerged as world leaders in the production of marble and other ornamental products. Despite environmental and competitive challenges, the industry remains profitable and continues to grow steadily.