From "glow in the dark" glass to a moa toe bone, the rebuild of Christchurch's horizontal infrastructure uncovered a remarkable array of artefacts.
Referring to the "uranium glass" discovery in suburban Richmond in late 2016 in its online blog, Christchurch-based Underground Overground Archaeology said there was "nothing like a little radioactive material to brighten up the day".
Underground Overground Archaeology worked with SCIRT throughout the horizontal infrastructure rebuild, identifying items and structures found during worksite excavation.
Director Katharine Watson said uranium was used as a "colouring agent" in uranium glass to "create a distinctive yellow or yellow-green colour".
The discovery of the glass illustrated the importance of robust archaeological protocols within the rebuild environment.