May 17, 2020

10 things you should know about TTR and the South Taranaki Bight

deep sea mining
extractive methods
Iron ore
Dale Benton
4 min
10 things you should know about TTR and the South Taranaki Bight
Some big news in the New Zealandmining industry this week has seen the Department of Conservation “give the green light” to a mining company...

Some big news in the New Zealand mining industry this week has seen the Department of Conservation “give the green light” to a mining company that plans to mine in the South Taranaki seabed.

The mining company in question is Trans-Tasman Resources (TTR), which proposes a project to excavate up to 50 million tonnes of sand each year, separating iron ore from the sediment and returning 90 percent of that sand back into the sea bed.

Here are 10 things you need to know about the South Taranaki Bight Project

1 – As noted above, TTR has proposed a project to mine iron ore from the South Taranaki Bight coastline, a large bay that extends south and east from the south coast of Taranaki in New Zealand’s North Island. The actual project area is off the coast of Kakaramea and Manutahi in New Zealand’s Exclusive Economic Zone (EEZ). This is governed by the Continental Shelf (Environmental Effects) Act 2012 which is often known as the EEZ act.

2 – The very first step for TTR will be commissioning an entirely new integrated mining vessel (IMV). This vessel will be built to be durable in all weather conditions, which will be important in the productivity of the operation. Two sea bed crawlers will be built, though only one will be in operation at any time. The seabed crawler will be tethered to the IMV and controlled remotely, move along the deposits and transfer the iron sand back to the IMV.

The IMV will contain a processing plant, a desalination plant and power generation. TTRS will also commission a trans-shipment vessel, which will be used to store iron ore and transfer it from the IMV to bulk export vessels.

3 – Mining will actually be carried out in blocks of 900m x 600m every 30 days. The sea crawler will move along the deposits and will dredge to the full depth of ore rich sediment. The sediment will then be transferred to the IMV, making only one sweep over any section of seabed at any time.

4 – The project is designed to give as much as it takes. Through a deposition pipe, the sand from which ore has been extracted will be backfilled as quickly as it is transferred out of the seabed.

5 – Through magnetic separation and a grinding mill for some of the sediment, the iron ore concentrate will be separated from the sand aboard the IMV.  No heat, chemicals or additives will be used in the process – just seawater.

6 – Once the iron ore concentrate is transferred, as a slurry, to the trans-shipment vessel it will be given something of a bath in fresh water from the desalination plant. This is to remove any salt from the iron ore before being loaded into an export vessel. This entire process takes place entirely at sea, with the iron ore shipped directly from the plant to global markets.

7 – Should you take a walk-in Taranaki you would never know such a large-scale operation is even taking place. With the project, completely at sea and in the specifically designed vessels, the entire project will not be visible at all from the shore.

8 – The project isn’t in operation just yet, but that hasn’t stopped TTR spending the best part of six years to undertake a highly detailed baseline study programme to truly assess and understand the possible environmental implications of the project.  This has seen over 35 reports with close collaboration from the New Zealand National Institute of Water and Atmospheric Research (NIWA) to guide the refine the extraction and process methodology to ensure minimal potential environmental effects.

 9 – It’s not just the environmental impacts that need to be considered, there’s a local economy that will benefit from the project. For New Zealand, TTR has proposed that it will see an increase in GDP by $150m per annum, while also increasing employment opportunities by 1,600. For the Taranaki Region, in particular, a $50m increase in GDP per year, as well as employment and training opportunities.

10 – TTR is currently awaiting marine consent from the EPA. Should it receive full consent to proceed with the project it is believed it will take around two years to finance, build and commission the operation, with the very first export production targeted for mid-2018.


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Jul 20, 2021

British Lithium Pressured Due To Calls for Electric Cars

3 min
The ever-increasing need for electric vehicles is mounting pressure on British Lithium as the 2035 deadline inches closer

The British demand for lithium is set to reach 75,000 tonnes by 2035 as the government works towards their ban on the sale of high-polluting diesel and petrol vehicles within the UK. This comes as automakers worldwide continue to insist on the benefits electric vehicles will have on slowing the rate of climate change. 

It is estimated that the UK will require 50,000-60,000 MT of lithium carbonate a year by 2035 for battery production to satisfy government needs. This is assuming production remains at 1.2 million vehicles per year, and the amount of lithium required does not increase.

British Lithium, which hopes to begin constructing a quarry to produce 20,000 MT of lithium carbonate a year in a $400 million investment, are not without competitors, both within the UK and abroad. 

Competition For Lithium Rises In Europe 

After only five years after its initial launch, Cornish Lithium is setting its sights on becoming a UK powerhouse in mining lithium, aiming to begin commercial production in under four years. Jeremy Wrathall, a former investment banker and current managing director of Cornish Lithium, had the future in mind when founding the company. 

“In 2016, I started to think about the electric vehicle revolution and what that would mean for metal demand, and I started to think about lithium,” he said in an interview with AFP. “A friend of mine mentioned lithium being identified in Cornwall, and I just wondered if that was a sort of unrecognised thing in the UK.”

Lithium was first discovered in Cornwall around 1864 and has not been mined again since 1914 when it was produced as an ingredient in fireworks. Now, however, Cornish Lithium is reportedly in the testing stage to see if the metal can be produced commercially to meet the growing demand required for the electric car sector. 

Despite Cornwall’s close historic ties to mining lithium, Wrathall insists that the project is purely commercial. 

Cornish Mining Revival For Lithium Production

“It’s not a mission that drives me to the point of being emotional or romantic,” he says. “It’s vitally important that we do get this technology otherwise Europe has got no lithium supply.”

The European Commission has also stated their goal to end the sale of new petrol and diesel cars by 2035 to aid the environment. That being said, the majority of lithium extraction currently relies on power provided by environmentally damaging fossil fuels─a slight contradiction. 

Alex Keynes, from the Brussels-based lobby group Transport & Environment, is adamant that mining for lithium should be done sustainably. 

“Our view is that medium-to-long term, the majority of materials including lithium should come from efficient and clean recycling.

“Europe from a strategic point of view should be looking at securing its own supply of lithium.”

Despite growing competition from abroad, British Lithium Chairman, Roderick Smith, continues to place importance on the mining of lithium within the UK. 

“Imagine what the UK economy would look like if we lost our automotive industry,” Smith says. “The stakes are high for the UK.”

Smith expects the UK to compete with other European countries to secure a lithium battery plant in the near future.

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