Explore the metal recycling process that turns scrap metal into high-quality tin cans for paint. The process starts with crushing and melting the metal, which is then molded into paint can shapes ...
Smithsonian Magazine on MSN4d
Five Unusual Ways People Used Lead—and Suffered For ItLead-icine Upper-class men and women in ancient Egypt commonly defined their eyes with kohl—a dark powder made from lead ...
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