New Zealand's ports will come under intense scrutiny as the minister instructs a wide sweeping investigation into safety.
The government says NZ has to face up to difficult questions as it adapts to the extreme of climate change.
Vulcan's volumes were up 5% in the nine months ended March while revenue was up 34%.
Scarcely a week after the death of a stevedore at Ports of Auckland, Maritime NZ has been called to another fatality - this time at Lyttelton Port.