Thank you for NOT Prospecting

Kevin Bell gives a big "Thank You" to a prospector for not prospecting and leaving some of the best gold that they have found on their Thursday Mining Day under his tailings.
Of course, this leads to training about trending, $$$ per yard, visual prospecting above and below the ground level and the failings of us old-timers for letting new prospectors follow some of the rules of thumb.
S2: E5