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.
Take context from the input text and decide on the accurate relationship between 'Glencore' and 'Mining' from the options provided.
Options: product/material produced, industry, manufacturer, stock exchange