report, Protection of Archaeological Sites Report. New Zealand Historic Places Trust Report of the Protection of Archaeological Sites, Talks of degree of damage already sustained by sites, present and future threats, ways to improve or ameliorate threats, providing methods for information collection, categories of site damage. Contains lists of sites in order of most damaged to least current concer. Seal level change over past 20,000 years graph based on sea level and radiocarbon dates. Drawn map of Purakanui inlet channel area.