Providing a solution for off-shore islands

HG Leach barges aggregate from Kopu, south of Thames, to Waiheke, Great Barrier and other Hauraki Gulf islands. We supply roading aggregate and riprap or armor rock for marine, wharfs and foreshore protection.

Alternative to roading

HG Leach can barge aggregate to Auckland as an alternative to roading, thereby minimising the impact of heavy truck and trailers on the road.


HG Leach works very closely with McCallum Bros Ltd Maritime Operations based in the Hauraki Gulf, to barge aggregate offshore and to import high quality sand to the Thames Valley.