NEW DELHI: The mines ministry has written to the finance ministry to propose scrapping a five per cent export duty on iron ore pellets, Mines Secretary Balvinder Kumar told Reuters, adding the government could also look at abolishing duty on low-grade iron ore. He said miners in Goa have written to him seeking the cancellation of the 10 per cent duty on overseas shipments of iron ore from the state. Goa is known for low-grade ore used mainly by Chinese steel mills. India was also looking at a request to raise import duty on aluminium to 7.5 per cent from five per cent to protect local firms from rising supplies from nations like China.