C. S. Herzig

• Mine sampling and valuing
• 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
• 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