Hi from Poland

[JPoland]

I'm here on behalf of my father-in-law, who doesn't speak English. He knows a lot about metals and physics. His previous interests were to do with brass, copper, silver and aluminum. He designs and makes his own machines and devices. He's been into gold prospecting for awhile now and he keeps modifying and improving existing devices; e.g. the Henderson pump.

 

[Jaros]

Hi JP welcome. Welcome to the forum.
Jaros