Gold Ten Futures, May 24, according to foreign media reports, market participants said on Friday that in view of copper prices hitting a record high, the Mexican group (Grupo Mexico) owned mining company Asarco is planning to restart its copper smelter in the United States mothballed. Market participants said that Asarco is currently negotiating with unionized workers to restart the Hayden smelter in Arizona and nearby copper mines, as well as the Amarillo refinery in Texas. The restart of the H...