Portland Cement Works limestone quarry with earth digging equipment and railway, Northland
Aerial photograph taken by Whites Aviation. Other - note on register Special for Wilson's Portland Cement Company Quantity: 1 b&w original negative(s). Physical Description: 1/2 plate Glass negative, 4.75 x 6.5 inches
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AI colourised — images are interpretive. Model: Nano Banana 2. Generated August 13, 2026. Reviewed August 14, 2026.