The layoffs come as the company is implementing a roughly 50 per cent drop in mining, stacking and crushing rates at the mine, in which Freeport owns a 51 per cent stake and Chilean state-owned copper giant Codelco has the remaining 49 per cent interest.
In the context of the input sentence, determine the relationship between 'Codelco' and 'copper'.
Options: position held, member of, product/material produced, publisher