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The U.S. Geological Survey's (USGS) World Coal Quality Inventory (WoCQI) will contain coal-quality information on samples obtained from major and minor coal-producing regions throughout the world. In South America, coal resources are limited, and this extensive region has only 0.5 percent of the world's supply of coal. Although coal is widely distributed in Perú, Perú ranks thirty-ninth worldwide in coal reserves. Peruvian coal is used mainly for rural domestic use and minor industrial applications that include brickmaking, coal briquettes, metallurgy, cement production, and filters. |