Mexico could revoke a concession held by Americas Gold and Silver if it does not accept its new trade union representation there.

No. 1 is a deep sea polymetallic project with a 75,000 square kilometre exploration tenement.

The three countries feature a rich mining history and prospective geology.

In the filtration process, the existing water in the tailings is minimized, allowing most of the material to be stacked in a solid-state.

Tight copper concentrate supply remains a concern for downstream copper players.

Technique takes samples of gold from a mine or supplier and creates a complex chemical and physical blueprint for the material against which subsequent shipments can be checked.

Israeli diamond and mining tycoon will have access to audio and video of Vale's meetings to discuss the partnership over the giant Simandou iron-ore mine in Guinea.

The Brazilian miner's board approved the re-election of current CEO Eduardo de Salles Bartolomeo to serve a new three-year term.