Hafnium

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Tuesday, March 18, 2014

1995 Asarco silver troy oz silver registers radiation

An ASARCO 1995 silver "dollar" given as a "health safety excellence" award to "Best record Mission Complex" registers 25 micro-Sv on radiation scale for factory calibrated meter, when registering for gamma/beta/alpha particles, when tested for only a few minutes.  Background radiation in El Paso TX 3 miles from Asarco smelter site usually registers almost half that (14) with same meter.