New Refining Processes: How Tech Is Improving Purity and Yield Laser-based refining Gold in its pure form and other valuable metals are left behind when base metals in the ore are vaporized using laser-based devices. Compared to conventional smelting, this…
- GOLD : 5,547.52 ▲ 11.41
- SILVER : 71.62 ▲ 0.13





