Principles of Mining Valuation Organization and Administration Copper Gold Lead Silver tin a

Before becoming the 31st President of the United States, Herbert Hoover was a mining engineer and consultant. In this book, he presents his expertise on mining valuation, organization, and administration. Focusing on six key metals, Hoover's analysis provides a comprehensive guide to mining practices and economics in the early 20th century. This book is essential reading for anyone interested in mining, economics, or the history of Herbert Hoover's career.

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