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বিশ্ববাজারে সোনার দাম বেড়ে যাওয়ার পিছনে কী কারণ? কারখানায় যেভাবে সোনা প্রস্তুত করা হয়
How Millions Of Pure Gold Bars Are Made In America – From Mining To Factory
Did you know that millions of ounces of gold are extracted and refined in the U.S. every year — transforming from raw ore deep underground into gleaming bars worth billions?
In this documentary, The Factoran takes you inside the entire journey of American gold — from blasting rocks in remote mines to the high-security refineries where liquid gold is poured into molds. Watch how extreme heat, chemical precision, and rigorous testing turn earth’s rawest treasure into pure 24-karat bars.

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