while the DD design provides excellent ground handling and stability

and mineral deposits

Bedrock and crevice prospecting

Planning a successful field trip

and shallow water environments

Mines and Mineral Resources of Trinity County, California GENERAL METAL DETECTING BOOKS while the DD design providesJust reprinted: Mines and Mineral Resources of Trinity County, California County Report #4, California Division of Mines & Geology, 1965, 125 pages, large fold out map showing approximately 300 placer sites, 200 lode mines, plus legal description and brief history, geology and gold production, with large fold out map locating sites in cover pocket.