Video | Agriculture | Confidence | Economy | Energy | Employment | Finance | Media | Property | RBNZ | Science | SOEs | Tax | Technology | Telecoms | Tourism | Transport | Search

 


OceanaGold cleared to return to opencast mine in North Otago

OceanaGold cleared to return to opencast mine in North Otago after slip

By Pam Graham

July 1 (BusinessDesk) - OceanaGold Corp has clearance from WorkSafe NZ to mine the southwest corner of its opencast gold mine in North Otago while continuing to monitor 45 million tonnes of rock that slipped 200 metres in April.

The “failure” of a wall of the pit about 9am on April 19 came after heavy rain in the region and followed a slip which moved about 50 metres a year earlier.

No one was injured in the April slip but a helicopter was needed to evacuate miners from the underground mine nearby. The opencast mine had been in care and maintenance mode.

BusinessDesk understands the company had invested $1 million in a radar system to monitor the eastern face of the pit but it was the western face that failed.

That face had a monitoring system which sent text messages to an engineer. The engineer received a text about movement of the top half of the slip when it was raining heavily but the system monitoring the bottom of the slip is believed to have failed, BusinessDesk understands.

The alert of the potential disaster was actually raised by a worker, who spotted a crack in the road on his way to the underground mine. The decision was made to pull out workers near the surface of the underground mine while workers further down waited as the crack in the road widened.

WorkSafe NZ put a prohibition order on the opencast mine after the slip. The company has said gold production has continued from the opencast mine but this has been the processing of stockpiled ore. No new ore has been mined from the opencast pit since the slip.

OceanaGold now initially wants to mine the southwest corner of the pit, and the area known as the Goodbye Cut, while it evaluates potential for mining in the new pit landscape, particularly around an area known as the FRIM near one of the portals of the Frasers Underground Mine.

WorkSafe NZ lifted a prohibition on the SW corner of the mine last week but mining of this area will only take six months. It will take a month to put a road in and three months to mine but because there is a lot of overburden to be removed the ore mined is only likely to keep the gold production facility busy for a month.

OceanaGold can potentially mine the FRIM area around a portal to the underground mine but is yet to evaluate fully if it is economic and an approval from WorkSafe NZ will be needed.

(BusinessDesk)

© Scoop Media

 
 
 
 
 
Business Headlines | Sci-Tech Headlines

 

Scoop Business: RBNZ Keeps OCR At 3.5%, Signals Slower Pace Of Future Hikes

Reserve Bank governor Graeme Wheeler kept the official cash rate at 3.5 percent and signalled he won’t be as aggressive with future rate hikes as previously thought as inflation remains tamer than expected. The kiwi dollar fell to a seven-month low. More>>

ALSO:

Weather: Dry Spells Take Hold In South Island

Many areas in the South Island are tracking towards record dry spells as relatively warm, dry weather that began in mid-August continues... for some South Island places, the current period of fine weather is quite rare. More>>

ALSO:

Scoop Business: Productivity Commission To Look At Housing Land Supply

The Productivity Commission is to expand on its housing affordability report with an investigation into improving land supply and development capacity, particularly in areas with strong population growth. More>>

ALSO:

Forestry: Man Charged After 2013 Death

Levin Police have arrested and charged a man with manslaughter in relation to the death of Lincoln Kidd who was killed during a tree felling operation on 19 December 2013. More>>

ALSO:

Smells Like Justice: Dairy Company Fined Over Odour

Dairy company fined over odour Dairy supply company Open Country Dairy Limited has been convicted and fined more than $35,000 for discharging objectionable odour from its Waharoa factory at the time of last year’s ”spring flush” when milk supply was high. More>>

Scoop Business: Dairy Product Prices Decline To Lowest Since July 2012

Dairy product prices dropped to the lowest level since July 2012 in the latest GlobalDairyTrade auction, led by a slump in rennet casein and butter milk powder. More>>

ALSO:

SOE Results: TVNZ Lifts Annual Profit 25% On Flat Ad Revenue, Quits Igloo

Television New Zealand, the state-owned broadcaster, lifted annual profit 25 percent, ahead of forecast and despite a dip in advertising revenue, while quitting its stake in the pay-TV Igloo joint venture with Sky Network Television. More>>

ALSO:

Get More From Scoop

 
 
Computer Power Plus

Standards New Zealand

Standards New Zealand

Mosh Social Media
 
 
 
 
 
 
 
 
Business
Search Scoop  
 
 
Powered by Vodafone
NZ independent news