Utilize the input text as a context reference, choose the right relationship between Minas Rio and iron ore from the options. Options: 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.

It is the second multi-billion charge announced this year, mostly related to its recently launched Minas Rio iron ore mine in Brazil, which has been plagued by delays and cost overruns since Anglo bought it in 2007-2008 for about $5.5 billion.

Answer: product_or_material_produced