Utilize the input text as a context reference, choose the right relationship between 'Glencore' and 'mining' from the options.
Options: chief executive officer, industry, developer, director/manager

Ian Waldie by Vanessa Desloires Glencore's true value has analysts guessing Glencore shares routed amid debt concerns Markets Live: $35b wiped off ASX Shares in Australia's biggest mining company, BHP Billiton, have fallen to a seven-year low after being caught up in a rout of rival Glencore, which lost 30 per cent of its share price overnight.
industry