Isbn: 9780873351058 - practical placer mining (1 risultati)

Soft cover. Condizione: Very Good -. Tight binding, clean interior. Green wraps. A couple indents to front and back. Previous owner's name on title page, sparse notes throughout, b/w illustrations. Based on a session of the same name at the February 1991 annual meeting of the Society for Mining, Metallurgy, and Exploration. Intends to present a "how to" as well as a "how not to" guide to various facets of placer work. 106 pp. …