Ch. 1: Gold and Silver in 1911

• Ch. 1: Gold, Silver in 1911
• Ch. 2: Platinum in 1911
• Ch. 3: Gemstones in 1911

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• Bradford. The Berringa Gold-Field
• Berringa Gold Fields, Australia
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• Bradford. The Berringa Gold-Field
• Berringa Gold Fields, Australia
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• US Geol. Surv. 1920. Gemstones, Metals.
• Ch. 1: Gold, Silver in 1920
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• US Geol. Surv. 1917. Gemstones, Metals.
• Ch. 1: Gold, Silver in 1917
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• US Geol. Surv. 1915. Gemstones, Metals.
• Ch. 1: Gold, Silver in 1915
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• US Geol. Surv. 1910. Gemstones, Metals.
• Ch. 1: Gold, Silver in 1910
•  
• US Geol. Surv. 1882. Gemstones, Metals.
• Ch. 1: Gold, Silver in 1882
•  

• US Geol. Surv. 1910. Gemstones, Metals.
• US Geol. Surv. 1922. Gemstones, Metals.
• US Geol. Surv. 1885. Gemstones, Metals.

Deposits Diamond Gemological Properties Gemstones Gold History Mine Mining Production USA

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