| http://www.w3.org/ns/prov#value | - Upon assembly and attachment of two such mating shell halves of predetermined length to form a hollow auger shaft, the ends of the shaft may be closed, as by attachment of suitable closure means such as end plates thereto, whereby fluid self-hardenable material may be pumped or fed into the closed shell to fill the hollow of the same, including the hollow portions of the helical flighting of the r
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