Reproduced from authentic archival documents

nuts and bolts

The metal detector section is expanded to include coverage of a number of new detectors and a section on how to choose a detector for purchase

multiple recovery surfaces

Detection Type: Pulse Induction

Oregon Gold and Gems: Then & Now GPZ 7000 Coils Reproduced from authentic archival documentsOregon Gold & Gems Maps: Then & Now Historic & Modern Prospecting Maps for Oregon's Gold, Silver, Gemstones & Mining Districts Discover Oregon's legendary goldfields and gemstone collecting areas with Oregon Gold & Gems Maps: Then & Now. This comprehensive five map collection combines modern USGS maps with authentic historic mining maps, allowing gold prospectors, metal detectorists, rockhounds, and outdoor enthusiasts to compare today's landscape