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.

Bottom of the cycle Rival gold miner Evolution Mining is also finding opportunities at the bottom of the cycle, recently picking up the Cowal gold mine from Barrick Gold for $550 million as well as a deal to acquire La Mancha's Australian assets.

Answer: product_or_material_produced