In the context of the input sentence, determine the relationship between 'gold mine' and 'gold'.
Options: director/manager, developer, parent organization, product/material produced

"Hemeti met with leading sheikhs of the area, and told them that the Jebel 'Amer gold mine will be protected by the RSF, as a number of gold mining companies will start operating in the area," one of the sources said.
product/material produced