Free Preview of The Explorers', Miners', and Metallurgists' Companion: Comprising a Practical Exposition of the Various Departments of Geology, Exploration, Mining, Engineering, Assaying, and Metallurgy
The Explorers', Miners', and Metallurgists' Companion: Comprising a Practical Exposition of the Various Departments of Geology, Exploration, Mining, Engineering, Assaying, and Metallurgy