| 11. | Difficult-to-reach placer deposits may be mined by tunnels.
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| 12. | Over 1 million ounces of gold have been recovered from placer deposits in the Circle district.
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| 13. | During early colonial times there were gold exports to Per?from placer deposits which soon depleted.
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| 14. | Naturally occurring lonsdaleite has also been identified in non-bolide diamond placer deposits in the Sakha Republic.
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| 15. | Many Chinese lived in Central City during the early days working the placer deposits of Gregory Gulch.
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| 16. | Lacking the placer deposits of many Utah mines, extracting Silver City's riches required labor-intensive hard rock mining.
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| 17. | It is often found in placer deposits.
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| 18. | The fissure veins produced 51, 000 ounces of gold, while the placer deposits produced 110, 000 ounces.
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| 19. | About 200, 000 ounces ( 6.2 tonnes ) of gold has been produced from these placer deposits.
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| 20. | The Montrose Placer Mining Company was formed to mine gold from placer deposits along the Dolores River.
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