I have a Radex One geiger counter/dosimeter which I put on a new pack of 10 electrodes 0.040 x 7 inch 0.10 µS/hr. Dividing the readings by the volume of the electrodes I got very different numbers for 2% thorium (no, I didn't mix up the data - I measured to be sure) at 0.08 µS/h per cm3 (3/32 inch) and 0 .35 µS/h/cm3 (1/16"). These .040 Tri-Mix electrodes have a reading of 0.12 µS/h/cm3. Not bad, but definitely radioactive.
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