Aurubis AG, a German copper recycling company, announced on Tuesday it is investing €330 million ($355 million) to expand its Hamburg site. The precious metals processing plant and refinery has been earmarked with €300 million, while €30 million have been allocated for augmenting environmental protection. Aurubis also announced the second stage and significant expansion of the Reducing Diffuse Emissions, or RDE, used in primary copper reduction. The new precious metal plant is expected to come online at the end of 2026. With this plant, the company is expecting higher efficiencies which in tur…