Utilize the input text as a context reference, choose the right relationship between Yanacocha and gold 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.

As you can see here, the first phase of the sulphates project is focused on developing the most profitable deposits and is expected to produce approximately 500,000 gold equivalent ounces per annum through 2030 and extend Yanacocha operations into the 2040.

Answer: product_or_material_produced