The soil from swamps was often washed through screens, leaving behind kauri gum chips, small pieces of wood and other debris. This was heaped in a pile, usually on top of a hill that was exposed to sun and wind. The gum chips would be thrown in the air, allowing the wind to blow away the lighter material – a process called winnowing.
Te whakamahi i tēnei tūemi
Alexander Turnbull Library, Northwood Collection (PA-Group-00027)
Reference:
1/2-061992; F
Photograph by Arthur James Northwood
Permission of the Alexander Turnbull Library, National Library of New Zealand, Te Puna Mātauranga o Aotearoa, must be obtained before any re-use of this image.
Tāpiritia te tākupu hou