Table 6 Minerals and Areas Currently Included in the National Mining Reserves Minerals 1. Sulfur associated with salt domes 2. Salt 3. Salt deposits formed by sea waters 4. Coal 5. Iron that might be subject to siderurgic exploitation 6. Anthracite 7. Potash 8. Phosphoric rock 9. Radioactive minerals uranium, thorium, columbium, yttrium, and erbium 10. Beryllium 11. Minerals in placer beds 12. Guano Minerals in Determined Areas 1. Manganese in Leon, Guanajuato 2. Manganese in the Territory of Lower California 3. Mercury in several areas of the state of Guerrero 4. Phosphoric rock in Concepcion del Oro, Zacatecas 5. Copper, manganese, and gypsum in Mulege, Baja California 6. Phosphoric rock in Galeana, Nuevo Leon, and Saltillo, Coahuila 7. Phosphates in Lower California 8. Manganese in the south of Jalisco and west of Michoacan. 9. Titanium in Pluma Hidalgo, Oaxaca 10. Chromite, cobalt, copper, manganese, nickel, pyrite, chromium, asbestos, and talc in a zone of Durango and in Cabullona, Sonora 11. Bauxite and phosphoric rock in an area of Yucatan 12. Copper and molybdenum in the northern part of Sonora 13. Copper in areas of Jalisco and Colima 14. Gold and silver in Pueblo Nuevo, Durango; San Miguel Amatlan and Santa Catarina, Oaxaca 15. Bauxite in San Luis Potosi Source: Ministry of Mines. Special Concessions Special concessions differ from ordinary mining concessions in that 66 percent (as opposed to 51 percent) of the corporate capital must be controlled by Mexican nationals. They are granted to Mexican nationals or to companies that are organized in accordance with Mexican law. This type of concession provides the same rights as do ordinary mining con-cessions. Special concessions, however, are subject not only to the same obligations as ordinary concessions, but also to special obligations that are established for each particular concession title. When a promoter or his legal representative files an application for a special concession, 19