Utilize the input text as a context reference, choose the right relationship between Glencore and Mining 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.

Mining stocks were mostly lower as risk appetite waned, with heavyweights BHP Billiton (NYSE: BBL - news ) , Glencore (Xetra: A1JAGV - news ) and Anglo American (LSE: AAL.L - news ) all registering falls.

Answer: industry