Altura Mining Limited Revised production and sales guidance for the quarter ending March 2020. For the quarter, the completion of the shipment by 31 March would result in estimated sales of 34,000-35,000 dry metric tonnes (dmt) for the March quarter. This compares to the previous guidance of 40,000-50,000 dmt in the quarterly report. Altura expects its March quarter production to be 40,000-43,000 wmt, which is marginally lower than the previous guidance of 45,000-50,000 wmt, due to adverse impacts associated with tropical cyclones during the period.