Field days, releases, and notes from Trinityau / Ray Mills. The list is short on purpose — when something matters, it lands here.
The companion volume to the first edition is out — new chapters on ground reading, coil selection, and a refreshed look at the equipment that actually earns its keep in the field.
Shasta County, CA
Small group, one-on-one time on real ground. Bring your own detector. Limited spots, contact Trinityau / Ray Mills directly to ask about availability.
Forty years of writing for the California Mining Journal sits behind both books. The lessons in those columns are pulled together, expanded, and put on the page.
Northern California
For students of the books — a call to talk through a site, a piece of equipment, or a question about technique. Reach out and we will set a time.
The easiest way is the phone. Talk it through, ask a question, hear it straight.
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