Glencore posts lower metals output for first nine months, reiterates outlook
The miner and trader's own sourced copper production fell 4% to 705,200 metric tons, while its own sourced cobalt output fell 18% to 26,500 tons.
Sub-bituminous coal, also known as black lignite, falls between lignite andbituminous coal, as per the classification system used in the United States and Canada. Geologically, it is a young coal, having formed anywhere from 251 million years ago to the present.