In H1 2012 Jastrzębska Spółka Węglowa generated EBITDA of PLN 1,544 million, up 25% compared to H1 2011. Sales revenues were PLN 4,635.0 million (PLN 4,660.2 million in H1 2011). In turn, net profit grew by more than one half to PLN 783.1 million (PLN 517.3 million in…