Take context from the input text and decide on the accurate relationship between 'El Abra mine' and 'Freeport-McMoRan' from the options provided.
Options: chairperson, operator, industry, owned by

SANTIAGO Aug 31 (Reuters) - A Chilean union that represents copper mine workers rejected a move by Freeport-McMoRan Inc to drastically cut staff at its El Abra mine and said on Monday it was considering action.
operator