Vervaardiging van schelpkalk

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In Hasselt, Overijssel, is the only distillery of shell limestone in the Netherlands which is still in operation. At the distillery, shells from the Wadden Sea are processed into shell lime, which is mainly used for the restoration of monuments. SHOTS: construction workers joint brickwork of a house; shell suction dredger dumps sucked up shells into barge on the Wadden Sea; int. and ext. kilns at the shell lime kiln in Hasselt; burning process of shells after which the burnt shells are sprayed with water and disintegrate into lime; dried lime in packaging hall; ext. Dom Church in Utrecht being restored with shell lime mortar.

Human-made No record of this work says a model made it. What this means.