The lid is 1" thick

Superior target separation in trashy environments

Arizona Ghost Town Sites: Then & Now

Does it require running water

Population comparison information

Field Geology Illustrated 2nd ED. By Terry S. Maley Z-Lynk The lid is 1" thickField Geology Illustrated is an excellent field reference to aid in recognizing, interpreting, and describing geologic features at the outcrop. Includes detailed descriptions, illustrations and photographs of geologic features in the field setting. Contains hundreds of B W photos, each accompanied by an introspective sketch and detailed description. Terry S. Maley, 704 pages, 5 1 2 x 8 1 2 soft cover.