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.

Commodities trader and mining giant Glencore PLC GLEN, -29.42% GLCNF, -27.70% sank 29% after Investec analysts suggested in a report that the company’s equity value could evaporate against its large debt pile unless commodity prices improve or the company launches a substantial restructuring.

Answer: industry