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.
Utilize the input text as a context reference, choose the right relationship between 'Glencore' and 'Mining' from the options.
Options: stock exchange, manufacturer, product/material produced, industry