Pre Cast Concrete Ducts from our 1000 series being installed down at the sand mines in Kawhia. Truck and trailers left at 4am to head down to the coast
These ducts carry processed black sand from the mine out to the ships. Male and Female interlocking and following 4 different radius, they were installed to prevent any accidental spillage into a nearby trout hatchery (the ducts for which we also supplied).
