M.A. Buth
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Engineer writing books about Precious Metals since 2012. My (own) favorite reads:
Testing Precious Metals - C.M. Hoke remade by M.A. Buth: https://www.amazon.com/dp/B0C2SQ8PCK
Urban Mining Series - Where to find Gold & Silver in my enviroment? Ebooks with AI support! https://www.amazon.com/dp/B0DRTXYMQW
Testing Precious Metals - C.M. Hoke remade by M.A. Buth: https://www.amazon.com/dp/B0C2SQ8PCK
Urban Mining Series - Where to find Gold & Silver in my enviroment? Ebooks with AI support! https://www.amazon.com/dp/B0DRTXYMQW