11. Industrial minerals contributed $ 58 million, up from $ 52 million a year earlier.12. From 1990 onwards, Imetal focused its development on industrial minerals , pursuing an acquisition policy. 13. Its members include all the major industrial mineral mining operators in the United Kingdom. 14. In some cases, organic substances ( such as peat ) are categorized as industrial minerals . 15. In April 2004, Mackenzie joined Rio Tinto as chief executive of the industrial minerals division. 16. The company said lower metal prices were partly offset by higher prices for industrial minerals . 17. Crab Orchard is also home to a large limestone mine operated by Franklin Industrial Minerals . 18. The country is also a producer of industrial minerals . 19. Income from copper, coal, aluminum and industrial minerals rose. 20. Its other Alleghany units are in the businesses of reinsurance, industrial minerals and steel-fastener importing.
