Extracting gold from ore is a poisonous business. The most common method is cyanide leaching, where cyanide salts in solution are used to suck the gold out from its ore. You get gold, but you also get ...
BUTUAN CITY – A new sago pith extracting device promises to revitalize the traditional starch industry, offering a solution to the laborious process of extracting starch from the Lumbia tree. “The ...
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