What is the relationship between Roy Hill and iron ore in the context of the input sentence. Choose an answer from: product/material produced; manufacturer; distributed by; industry; position held; original broadcaster; owned by; founded by; distribution format; headquarters location; stock exchange; currency; parent organization; chief executive officer; director/manager; owner of; operator; member of; employer; chairperson; platform; subsidiary; legal form; publisher; developer; brand; business division; location of formation; creator.

Roy Hill boss Barry Fitzgerald has confirmed that the mine is expected to make its first iron ore shipment within weeks, and ramp up to full production of 55 million tonnes in 15 months.

Answer: product_or_material_produced