At issue is the longfin smelt, whose better-known relative, the delta smelt, has long been at the heart of high-profile habitat battles. The Fish and Wildlife Service proposed designating 91,630 ...
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The prosecution stated that the defendants were accused of colluding with seven private-sector individuals who acted as clients for gold refining and smelting services. The private-sector defendants ...
Calcination has been widely employed. However, it has a high energy cost and environmental issues due to the release of toxic gases containing arsenic. In the treatment of refractory gold ores ...
You might not think you need a home security system, but having one can help keep your house safe. And we aren't talking about just security cameras but smart doorbells and motion sensors ...