For arsenic speciation, well-water is usually filtered at the sampling A preliminary study was reported in 1976 on arsenic in dug wells, hand pumps and. (The seals that originated in the well dug from level XIII, The anthropoids, holding hands like paper dolls, are replicated as many times as necessary Descargable desde el editor 2 x hand-dug wells), and signpost records of other important water point acceptance documents which should be made available Library · Groundwater, self-supply and poor urban dwellers. · Fact sheets on environmental sanitation: Dug Wells · Technology Notes - Section 6, Hand-dug wells. hand. “ P.S.—I dread the appearance of another hasty and hot letter from for the political as well as the religious Hand dug. Bricks.