Utilize the input text as a context reference, choose the right relationship between 'Glencore' and 'Mining' from the options.
Options: distributed by, business division, industry, founded by

Mining and trading firm Glencore (Xetra: A1JAGV - news ) has seen its share value drop by more than half in the past 12 months, with a 43.4% plunge since May.
industry