July 12, 2016:  Grubbing is the “art” of locating items on the river bottom that might have value. Today’s  effort was geared to recovering bottles and items that just looked interesting.  The real work is cleaning your finds and figuring which ones to toss (or give) away.  Keepers are generally the stone ware jugs and pots,  highly embossed bottles, and those with interesting shapes.