11. Non-metallic minerals , other than petroleum account for about 25 %. 12. In addition to food processing and agribusiness, construction and non-metallic mineral processing are important. 13. It is a brown to black metallic mineral which crystallizes in the tetragonal system. 14. Bhd . v . Non-Metallic Mineral Products Manufacturing Employees Union " ( 1980 ): 15. Some plateaus of the Appalachian Mountains contain metallic minerals such as iron and zinc. 16. Sept . VoPI of Non-Metallic Mineral Products Slips 4.66% 17. Antique has deposits of metallic and non-metallic mineral resources. 18. For the July-September period, output of the said metallic minerals climbed to 26, 933 DMT. 19. It is an opaque, silver white, metallic mineral which crystallizes in the orthorhombic crystal system. 20. This non-metallic mineral can be found in barangays Caayunan, San Pascual, Oliva and San Felipe.
