In 2013, Trans-Tasman Resources applied to mine ironsand off the coast of Patea.
The application came with brash but vague promises of jobs and economic prosperity.
It was an untried method of extraction from the seabed and even the so-called experts seemed to be in a guessing game when it came to the impacts of such an operation.
The Environmental Protection Authority declined the application, citing "uncertainty around the scope and significance of the potential adverse environmental effects".
The authority said it was not satisfied the life-supporting capacity of the environment would be safeguarded, or that adverse effects could be avoided, remedied or mitigated.