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ARCTIC

Scientists to make 3-D models of Arctic sea ice

Scientists working with Greenpeace will undertake an expedition to the Arctic that will produce the first 3D models of the Arctic sea ice, the group said on Friday.

The team was due to leave on Friday for the icy north from the Norwegian archipelago of Svalbard.

"Starting on July 9th, scientists led by Peter Wadhams of Cambridge University will work together with 3D scanning experts and engineers to capture the true shape of Arctic sea ice for the first time," Greenpeace said in a statement.

Scientists will use a special submarine vehicle to measure underwater icebergs and surface laser scanners for the exposed parts.

The finished model will pinpoint pressure ridges and deformations resulting from the repeated melting and freezing of the ice.

"The emphasis on pressure ridges is because these ice deformation features — which can be as much as 50 metres deep — contain about half of the ice in the Arctic, yet have been shrinking in numbers and thickness much faster than the ice as a whole," said Wadhams.

"We need to see if they are melting, or disintegrating, or both."

Greenpeace will also use the exhibition to draw attention to its Save The Arctic campaign, launched on the sidelines of the Rio+20 Earth summit last week to preserve the land mass from oil exploration and industrial fishing.

A number of celebrities including actors Hugh Grant and Penelope Cruz, entrepreneur Richard Branson and singer Paul McCartney have already signed a petition which will be placed at the North Pole.

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ENVIRONMENT

Sweden’s SSAB to build €4.5bn green steel plant in Luleå 

The Swedish steel giant SSAB has announced plans to build a new steel plant in Luleå for 52 billion kronor (€4.5 billion), with the new plant expected to produce 2.5 million tons of steel a year from 2028.

Sweden's SSAB to build €4.5bn green steel plant in Luleå 

“The transformation of Luleå is a major step on our journey to fossil-free steel production,” the company’s chief executive, Martin Lindqvist, said in a press release. “We will remove seven percent of Sweden’s carbon dioxide emissions, strengthen our competitiveness and secure jobs with the most cost-effective and sustainable sheet metal production in Europe.”

The new mini-mill, which is expected to start production at the end of 2028 and to hit full capacity in 2029, will include two electric arc furnaces, advanced secondary metallurgy, a direct strip rolling mill to produce SSABs specialty products, and a cold rolling complex to develop premium products for the transport industry.

It will be fed partly from hydrogen reduced iron ore produced at the HYBRIT joint venture in Gälliväre and partly with scrap steel. The company hopes to receive its environemntal permits by the end of 2024.

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The announcement comes just one week after SSAB revealed that it was seeking $500m in funding from the US government to develop a second HYBRIT manufacturing facility, using green hydrogen instead of fossil fuels to produce direct reduced iron and steel.

The company said it also hoped to expand capacity at SSAB’s steel mill in Montpelier, Iowa. 

The two new investment announcements strengthen the company’s claim to be the global pioneer in fossil-free steel.

It produced the world’s first sponge iron made with hydrogen instead of coke at its Hybrit pilot plant in Luleå in 2021. Gälliväre was chosen that same year as the site for the world’s first industrial scale plant using the technology. 

In 2023, SSAB announced it would transform its steel mill in Oxelösund to fossil-free production.

The company’s Raahe mill in Finland, which currently has new most advanced equipment, will be the last of the company’s big plants to shift away from blast furnaces. 

The steel industry currently produces 7 percent of the world’s carbon dioxide emissions, and shifting to hydrogen reduced steel and closing blast furnaces will reduce Sweden’s carbon emissions by 10 per cent and Finland’s by 7 per cent.

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