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'World’s oldest pyramid' built 25,000 years ago was not made by humans, archaeologists claim

While Guinness World Records officially lists the Djoser Step pyramid in Egypt as the world’s oldest pyramid (around 2,630 BC), one paper published in October claimed a layer of the Gunung Padang ...
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Line Boring a CAT 789 Suspension Part

Watch the precision process of line boring and bore welding a CAT 789 suspension component—restoring strength to this ...