Nice little find!
I pretty much always bring back a "to go order" of a dozen or so buckets when I go out digging. I've got an area set up in the back of the house for sluicing and panning that I have also been using to teach the Munchkin the ropes. She can already sluice, pan as well as operate a gold wheel. Not bad for a 7 year old if you ask me.
Usually when I go out, I'm at the dig site for a week with my re-circ system. I run all I can while there to work them down to cons. The last couple of days I alternate between running and stock piling materials to take home. once I have worked the "to go" buckets down to cons, I'll start doing clean up on everything. The area we were working on my last trip was giving up some nice little sluice box pickers as well as a lot of fines in the cons.