Platinum is mined and mixed with silver and gold to produce alloy, Russia.
Russia Date:1928 Duration:1 min 37 sec Sound:NO SOUND
Describes raw materials used in telephone manufacturing. The map shows a location of Russia. Platinum mined in the dredges of Ural Mountain streams. Hand examines crushed platinum ore in a bowl. Mixture of silver, gold and platinum is melted and poured into mold. The resultant alloy bar is placed between samples of gold, silver and platinum on a table. Animation shows use of the alloy in a telephone instrument.
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