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The "major part" of the approximately 4 million tonnes of lignite and brown coal produced a year is supplied to the nearby Sostanj Power Station. Eurocoal, a European coal industry lobby group, states on its website that the mine boasts "one of the thickest known coal layers in the world (up to 165 metres). The company’s long-term strategy is to operate the mine until 2054, as it is likely to remain Slovenia’s only exploitable energy resource for the next 50 years."