Riches to Rust

Twitty devotes more attention to the "surface plant." See Meyerriecks' Drills and Mills (0-9714383-0-7) for fuller description of the underground works. Intended to acquaint the casual explorer with the basics includes an appendix that identifies parts and their uses but the history & depth of detail will charm the hardest hearted of hard-rock miners. Very extensive bibliography. Annotation c. Book News, Inc., Portland, OR (booknews.com)