Bucket dredge in the Matanzas -Halifax rivers Cut south of St. Augustine ca. 1893. Large steel buckets attached to a continuous heavy chain scooped up sand, clay, and rocks, and then dumped the material on either side of the Cut via conveyor belts. Among the earliest of the dredges employed, the bucket dredge soon fell into disuse as chains often broke under the strain of conveying heavy spoil. Eighty to a hundred men with picks and shovels opened up ditches where little or no water existed. Courtesy. St. Augustine Historical Society.