Use of approved secure destruction facilities
Agencies need to follow a security process when decommissioning and disposing of IT equipment and media that has been used for official, sensitive or security classified information. This process is outlined in the document Approved Secure Destruction Facilities - Guidance to Agencies.
https://www.ncsc.govt.nz/assets/Uploads/Guidance-to-Agencies-ASDFs-15-Aug-version.pdf
GCSB Approved Secure Destruction Facilities