To increase the resilience of supply of essential materials, steps should be taken to:

1. Incorporate into all risk-management planning for critical infrastructure a consideration of the security of supply of materials and goods required for the construction, operation and maintenance of infrastructure (including aggregate, bitumen, cement, concrete, steel and processed timber) and other essential goods and services.
2. Require that regional councils, in conjunction with territorial authorities, undertake resource scans as part of their long-term planning processes and protect sites suitable for aggregate extraction, including through zoning.