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Posted by on Jun 28, 2018 in TellMeWhy |

What Are Ingots?

What Are Ingots?

What Are Ingots? Ingots are blocks of cast metal from which other things are made. You have probably heard of cast iron. Casting is the process by which molten metal is...

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Posted by on Jan 29, 2018 in TellMeWhy |

Who First Used Keys?

Who First Used Keys?

Who First Used Keys? The first known form of lock and key was used by the Assyrians in the Middle East about 4,000 years ago. This was revealed by the discovery of such...

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