Junior miner Mount Gibson Iron has reported higher revenues for the first half of 2020, on the back of increased iron-ore production. Mount Gibson on Wednesday reported that iron-ore sales for the six months to December had reached 2.8-million tonnes, up from the 2.2-million tonnes produced in the previous corresponding period, consisting of 1.4-million tonnes of high grade direct shipping ore and 1.4-million tonnes of low grade material.