Given the input sentence, please extract the subject and object containing a certain relation in the sentence according to the following relation types, in the format of "relation1: word1, word2; relation2: word3, word4". Relations include: 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.

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.

Answer: industry: Glencore, mining