Refer to the input text as context and select the correct relationship between 'Glencore' and 'mining' from the available options.
Options: industry, creator, distribution format, headquarters location

LONDON, July 2 (Reuters) - Global mining and commodity trading firm Glencore (Xetra: A1JAGV - news ) met with Iranian officials in Tehran to discuss possible business deals should economic sanctions be lifted, industry sources said on Thursday.
industry