Utilize the input text as a context reference, choose the right relationship between 'GLENCORE' and 'mining' from the options.
Options: industry, owned by, distribution format, original broadcaster

* GLENCORE - Global mining and trading firm Glencore Plc and Australia's Bloomfield Group agreed to acquire Vale's Integra coal mine in Australia for undisclosed terms, the buyers said in an emailed statement on Wednesday.
industry