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Chester Wells Purington

5 cilt bulundu.

Cilt sonuçları

CiltMethods and Costs of Gravel and Placer Mining in AlaskaChester Wells Purington

Methods and Costs of Gravel and Placer Mining in Alaska

Chester Wells Purington · Creative Media Partners, LLC

Sayfa sayısı yok · 2023

Kategori yok

Gold mines and miningMethods and costs of gravel and placer mining in AlaskaChester Wells Purington

Methods and costs of gravel and placer mining in Alaska

Chester Wells Purington · Govt. Print. Off.

273 sayfa · 1905

Gold mines and mining

CiltMine Sampling and Valuing; a Discussion of the Methods Used in Sampling and Valuing Ore Deposits, with Especial Reference to the Work of Valuation by the Independent EngineerChester Wells Purington, C. S. Herzig

Mine Sampling and Valuing; a Discussion of the Methods Used in Sampling and Valuing Ore Deposits, with Especial Reference to the Work of Valuation by the Independent Engineer

Chester Wells Purington, C. S. Herzig · Creative Media Partners, LLC

Sayfa sayısı yok · 2018

Kategori yok

MapsTelluride folio, ColoradoChester Wells Purington, Geological Survey (U.S.)

Telluride folio, Colorado

Chester Wells Purington, Geological Survey (U.S.) · U.S. Geological Survey

17 sayfa · 1899

Geology / Maps

MapsLa Plata folio, ColoradoWhitman Cross, Arthur Coe Spencer, Chester Wells Purington, Geological Survey (U.S.)

La Plata folio, Colorado

Whitman Cross, Arthur Coe Spencer, Chester Wells Purington, Geological Survey (U.S.) · U.S. Geological Survey

14 sayfa · 1899

Geology / Maps