Tightening down the tarp on a windy day

Since all sherd processing was done in the relative open, windstorms, rain, and hail all could and did slow or halt work, sometimes for several days at a time. A tarp canopy shaded about half of the sherdyard at any given point in the day. Even on the best of days a moderate breeze blew through the sherdyard; at least a couple days a week, conditions (high wind and the resulting dust) would halt work. Dust, sand, and chaff from the mudplaster bins continues to sift out of notebooks years later. Rainstorms could, and did, leave the sherd bins filled with water -- unfortunately I don't have any pictures at hand. Although the tags survived wind and rain, firmly pinned in place with 10 cm nails, the sherds and mudplaster bins would take several days to dry out. Rain, and wind, would dismantle the canopy at least once a season.