The document summarizes key information about mineral resources in the Philippines. It discusses that mining involves extracting valuable minerals from the earth. It also notes that the country has an estimated 21.5 billion metric tons of metal deposits and 19.3 billion metric tons of non-metal deposits. Some major metallic minerals found in the Philippines include nickel, iron, and copper, while non-metallic minerals include coal, salt, and clay. The mining industry employs over 210,000 workers and contributed 13.3 billion PHP in taxes in 2011.