Looks like the outcome of that trip was you encountered a Bad rock with nothing better to do in its existence than destroy your tire.

On the other hand, since we're dealing with three gold mining ghost town locations, you have to wonder if perhaps that was a Good rock that was actually a nice specimen.

Monte

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Stinkwater Wells Trading Post
Metal Detector Evaluations and Product Reviews monte@ahrps.org ... or ... monte@stinkwaterwells.com 503-481-8147Fisher:(2), Nokta-Makro:(4), Teknetics:(2), Tesoro:(2)Killer B's 'Hornet' and White's Pro Star and Detector Pro's UniprobeNote: Detectors are listed alphabetically by Brand. Models are chosen based on search site conditions.*** All working well today to make memories for tomorrow. ***