The president exempted a copper smelter in Arizona from air-quality rules. An E.P.A. official guided the company that sought ...
Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...
Ace Green Recycling, a Singapore-based lead and lithium-ion battery recycler with North American headquarters in Houston, has signed an equipment supply and licensing deal with Israel-based Hakurnas ...
Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...
(Repeats to additional subscribers) * China Dongling to restart 100,000 lead-zinc plant this mth * Jiyuan government undecides restarting time for 3 smelters * Yuguang may give up shut smelter; ...