The walnut harvest is in full swing, about midway through its roughly 40-day run, according to Stanislaus County Supervisor Jim DeMartini, whose DeMartini Inc. started growing the nuts in 1989. He has 400 acres and is able to harvest 20 acres, or about five truckloads, a day. The process starts with a shaker shaking trees in the orchard. The sweeper sweeps walnuts into rows, where they are gathered by a pickup machine. A bank-out wagon sends the walnuts into an elevator to be transported in trucks to the huller. The automated huller – in its third year of use – sorts, washes and dries the walnuts about 130 tons at a time. It needs only four workers to operate it.