Gold Miners' Secrets on Refining Gold and Silver (Firing, Recovery, Purifying) (Carter)

Proven methods of firing, recovery,& purifying gold & silver.

This is a small, no nonsense books that gives step by step instructions of various refining methods for gold and silver. Identifies dangers of using chemicals such as nitric acid and mercury used for extracting gold.

Paperback: 52 Pages
Publisher: Nola May Carter (1982)
Language: English