Refer to the input text as context and select the correct relationship between 'Glencore' and 'mining' from the available options.
Options: developer, employer, subsidiary, industry

LONDON, Sept 28 (Reuters) - Glencore (Xetra: A1JAGV - news ) shares sank more than 10 percent to a new record low on Monday, with the mining and trading company's drive to sell assets to cut heavy debts failing to soothe fears over slumping metals prices.
industry