Figuring out a price tag for some of the world's biggest and rarest diamonds can be as difficult as finding them.

Five years ago today, 31 men hung their identification tags on a board and headed underground to work.

A 30-year-old man has died following a work accident at a goldmine in Southland last night.

Be fearful when others are greedy and greedy when others are fearful - so goes the advice of investment sage Warren Buffett.

Oceana Gold is predicted to boost gold production 30 per cent to 40 per cent by 2017.

Sixty-five staff to axed as operator admits there is no chance whatsover of finding a buyer for Waikato mine that's cost about $500,000 a month to keep open.

Coalminer Bathurst Resources has posted a net loss of $16.4 million after tax for the year to June 30, 2015, compared to $189.9 million the previous year.

Fonterra has confirmed it has put on hold a proposed coal mine at Mangatangi while it assesses its energy options.

Commonwealth Bank economist Gareth Aird says the weak Australian currency is enticing tourists from home and abroad, helping the economy to rebalance and stimulate growth.

Solid Energy acting chairman Andy Coupe admitted it was "unlikely" that any sale, or sales, would cover its outstanding debt.

Gold futures have fallen for the second time in three days amid mounting speculation that the US Fed will raise interest rates.

Genesis Energy announced its last two coal-burning electricity generators at Huntly Power Station will be shut down.

Mr Key said Solid Energy had $300 million of outstanding debt and was in a "precarious position".

A little less than four years ago, the world looked like it was about to end and gold hit an all-time high. Now it has lost its lustre.

A collapse in iron ore and coal prices has exposed Australia's true vulnerability.

Gold prices have plunged to a five year low, but a local expert says Kiwi investors will hold out until prices lift again.

Up to 60 mining jobs have been promised with the start up of two new goldmining operations near Hokitika and Kumara.

The owner of the Sams Creek Gold Project, which sits atop what could be New Zealand's biggest undeveloped gold deposit, has slashed the value of the resource.

A decade-long project to save endangered giant snails from a West Coast coal mine will finish next year.

Mining giant Rio Tinto has pulled its support for any expansion of Kakadu's Ranger uranium mine after its operator put the project on ice.

The digger driver killed in a quarry landslide will be farewelled on Monday.

The full extent of illegal quarrying is not known after it was revealed the latest person to be killed was operating without a safety certificate.

Digger driver Murray Taylor, who was buried in a mammoth quarry landslide, has been remembered as a great bloke after hopes of finding him alive faded yesterday.

Editorial: The deaths this year leave the Government with egg on its face. They suggest that the more stringent approach was the right one. T

The former boss of the North Canterbury limestone quarry where a landslip is feared to have killed a digger operator yesterday has spoken of previous brushes with death and bemoaned the lack of regulation in the industry. Murray Taylor, the owner of Heathstock Haulage that operates the limestone mine, is believed to have died after he was buried under a rockfall yesterday.

The former boss of the quarry where a landslip is feared to have killed a digger operator yesterday has spoken of previous brushes with death.