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

Officials say it's the biggest gold mine in Guyana since Omai Gold Mines Ltd. ceased operations in 2005.

Answer: product_or_material_produced