Take context from the input text and decide on the accurate relationship between 'Glencore' and 'mining' from the options provided.
Options: industry, brand, legal form, location of formation

The concerns come two years after Glencore was granted approval to lift the rate of mining from 2.5 million tonnes of ore annually to 5 million tonnes and the yearly yield of zinc and lead bulk concentrate from 360,000 dry metric tonnes to 800,000 dry metric tonnes.
industry