Lakshmi Mittal, CEO of ArcelorMittal, is seen during the 50th World Economic Forum (WEF) annual meeting in Davos, Switzerland, January 22, 2020. REUTERS/Denis Balibouse

The Ilva steel plant is seen after ArcelorMittal said it was withdrawing from a deal to buy it over a legal row with the government, in Taranto, Italy, November 9, 2019. REUTERS/Ciro De Luca

The Ilva steel plant is seen after ArcelorMittal said it was withdrawing from a deal to buy it over a legal row with the government, in Taranto, Italy, November 9, 2019. REUTERS/Ciro De Luca

The Ilva steel plant is seen after ArcelorMittal said it was withdrawing from a deal to buy it over a legal row with the government, in Taranto, Italy, November 9, 2019. REUTERS/Ciro De Luca

Ilva steel plant workers, whose jobs are at risk after ArcelorMittal said it was withdrawing from a deal to buy the struggling firm, get on a bus outside the plant in Taranto, Italy, November 9, 2019

Ilva steel plant workers, whose jobs are at risk after ArcelorMittal said it was withdrawing from a deal to buy the struggling firm, are seen outside the plant in Taranto, Italy, November 9, 2019

Ilva steel plant workers, whose jobs are at risk after ArcelorMittal said it was withdrawing from a deal to buy the struggling firm, are seen outside the plant in Taranto, Italy, November 9, 2019

Ilva steel plant workers, whose jobs are at risk after ArcelorMittal said it was withdrawing from a deal to buy the struggling firm, are seen outside the plant in Taranto, Italy, November 9, 2019

An Ilva steel plant worker walks out of the plant after ArcelorMittal said it was withdrawing from a deal to buy it over a legal row with the government, in Taranto, Italy, November 9, 2019.

Ilva steel plant workers, whose jobs are at risk after ArcelorMittal said it was withdrawing from a deal to buy the struggling firm, are seen outside the plant in Taranto, Italy, November 9, 2019

The Ilva steel plant is seen after ArcelorMittal said it was withdrawing from a deal to buy it over a legal row with the government, in Taranto, Italy, November 9, 2019. REUTERS/Ciro De Luca

The Ilva steel plant is seen after ArcelorMittal said it was withdrawing from a deal to buy it over a legal row with the government, in Taranto, Italy, November 9, 2019. REUTERS/Ciro De Luca

The Ilva steel plant is seen after ArcelorMittal said it was withdrawing from a deal to buy it over a legal row with the government, in Taranto, Italy, November 9, 2019. REUTERS/Ciro De Luca

The Ilva steel plant is seen after ArcelorMittal said it was withdrawing from a deal to buy it over a legal row with the government, in Taranto, Italy, November 9, 2019. REUTERS/Ciro De Luca

The Ilva steel plant is seen after ArcelorMittal said it was withdrawing from a deal to buy it over a legal row with the government, in Taranto, Italy, November 9, 2019. REUTERS/Ciro De Luca

Former Ilva steel plant worker Egidio Murciano is pictured at home in front of a view of the plant, after ArcelorMittal said it was withdrawing from a deal to buy it over a legal row with the government, in Taranto, Italy, November 9, 2019. REUTERS/Ciro De Luca

Former Ilva steel plant worker Egidio Murciano is pictured at home in front of a view of the plant, after ArcelorMittal said it was withdrawing from a deal to buy it over a legal row with the government, in Taranto, Italy, November 9, 2019. REUTERS/Ciro De Luca

Former Ilva steel plant worker Egidio Murciano is pictured at home in front of a view of the plant, after ArcelorMittal said it was withdrawing from a deal to buy it over a legal row with the government, in Taranto, Italy, November 9, 2019. REUTERS/Ciro De Luca

The Ilva steel plant is seen after ArcelorMittal said it was withdrawing from a deal to buy it over a legal row with the government, in Taranto, Italy, November 9, 2019. REUTERS/Ciro De Luca

The Ilva steel plant is seen after ArcelorMittal said it was withdrawing from a deal to buy it over a legal row with the government, in Taranto, Italy, November 9, 2019. REUTERS/Ciro De Luca

The Ilva steel plant, which ArcelorMittal is threatening to abandon over a legal row with the government, is seen in Taranto, Italy, November 9, 2019. REUTERS/Ciro De Luca

The Ilva steel plant, which ArcelorMittal is threatening to abandon over a legal row with the government, is seen in Taranto, Italy, November 9, 2019. REUTERS/Ciro De Luca

Italian Prime Minister Giuseppe Conte speaks to a protester as he visits the Ilva steel plant, which ArcelorMittal is threatening to abandon over a legal row with the government, in Taranto, Italy, November 8, 2019. REUTERS/Ciro De Luca

Italian Prime Minister Giuseppe Conte visits the Ilva steel plant, which ArcelorMittal is threatening to abandon over a legal row with the government, in Taranto, Italy, November 8, 2019. REUTERS/Ciro De Luca

Italian Prime Minister Giuseppe Conte visits the Ilva steel plant, which ArcelorMittal is threatening to abandon over a legal row with the government, in Taranto, Italy, November 8, 2019. REUTERS/Ciro De Luca

Italian Prime Minister Giuseppe Conte speaks to protesters as he visits the Ilva steel plant, which ArcelorMittal is threatening to abandon over a legal row with the government, in Taranto, Italy, November 8, 2019. REUTERS/Ciro De Luca

Italian Prime Minister Giuseppe Conte speaks to a protester as he visits the Ilva steel plant, which ArcelorMittal is threatening to abandon over a legal row with the government, in Taranto, Italy, November 8, 2019. REUTERS/Ciro De Luca

Italian Prime Minister Giuseppe Conte speaks to protesters as he visits the Ilva steel plant, which ArcelorMittal is threatening to abandon over a legal row with the government, in Taranto, Italy, November 8, 2019. REUTERS/Ciro De Luca

Italian Prime Minister Giuseppe Conte visits the Ilva steel plant, which ArcelorMittal is threatening to abandon over a legal row with the government, in Taranto, Italy, November 8, 2019. REUTERS/Ciro De Luca

Italian Prime Minister Giuseppe Conte arrives to visit the Ilva steel plant, which ArcelorMittal is threatening to abandon over a legal row with the government, in Taranto, Italy, November 8, 2019. REUTERS/Ciro De Luca

Italian Prime Minister Giuseppe Conte arrives to visit the Ilva steel plant, which ArcelorMittal is threatening to abandon over a legal row with the government, in Taranto, Italy, November 8, 2019. REUTERS/Ciro De Luca

Italian Prime Minister Giuseppe Conte arrives to visit the Ilva steel plant, which ArcelorMittal is threatening to abandon over a legal row with the government, in Taranto, Italy, November 8, 2019. REUTERS/Ciro De Luca

People protest as they wait for the arrival of Italian Prime Minister Giuseppe Conte outside the Ilva steel plant, which ArcelorMittal is threatening to abandon over a legal row with the government, in Taranto, Italy, November 8, 2019. The banners read: "Citizens and workers united for the reconversion" and "Closure and reconversion, the only solution". REUTERS/Ciro De Luca

People wait for the arrival of Italian Prime Minister Giuseppe Conte outside the Ilva steel plant, which ArcelorMittal is threatening to abandon over a legal row with the government, in Taranto, Italy, November 8, 2019. REUTERS/Ciro De Luca

People wait for the arrival of Italian Prime Minister Giuseppe Conte outside the Ilva steel plant, which ArcelorMittal is threatening to abandon over a legal row with the government, in Taranto, Italy, November 8, 2019. REUTERS/Ciro De Luca

Ilva steel plant workers are seen outside the plant during a 24-hour strike against ArcelorMittal's plan for thousands of job cuts at the troubled Ilva unit which it is threatening to abandon over a legal row with the government, in Taranto, Italy, November 8, 2019. REUTERS/Ciro De Luca

A worker from the Ilva steel plant sits outside the plant during a 24-hour strike against ArcelorMittal's plan for thousands of job cuts at the troubled Ilva unit which it is threatening to abandon over a legal row with the government, in Taranto, Italy, November 8, 2019. REUTERS/Ciro De Luca

Ilva steel plant workers are seen outside the plant during a 24-hour strike against ArcelorMittal's plan for thousands of job cuts at the troubled Ilva unit which it is threatening to abandon over a legal row with the government, in Taranto, Italy, November 8, 2019. REUTERS/Ciro De Luca

The Ilva steel plant, which ArcelorMittal is threatening to abandon over a legal row with the government, is seen in Taranto, Italy, November 8, 2019. REUTERS/Ciro De Luca

The Ilva steel plant, which ArcelorMittal is threatening to abandon over a legal row with the government, is seen in Taranto, Italy, November 8, 2019. REUTERS/Ciro De Luca

Ilva steel plant workers are seen outside the plant during a 24-hour strike against ArcelorMittal's plan for thousands of job cuts at the troubled Ilva unit which it is threatening to abandon over a legal row with the government, in Taranto, Italy, November 8, 2019. REUTERS/Ciro De Luca

The Ilva steel plant, which ArcelorMittal is threatening to abandon over a legal row with the government, is seen in Taranto, Italy, November 8, 2019. REUTERS/Ciro De Luca

Ilva steel plant workers are seen outside the plant during a 24-hour strike against ArcelorMittal's plan for thousands of job cuts at the troubled Ilva unit which it is threatening to abandon over a legal row with the government, in Taranto, Italy, November 8, 2019. REUTERS/Ciro De Luca

Ilva steel plant workers are seen outside the plant during a 24-hour strike against ArcelorMittal's plan for thousands of job cuts at the troubled Ilva unit which it is threatening to abandon over a legal row with the government, in Taranto, Italy, November 8, 2019. REUTERS/Ciro De Luca

The Ilva steel plant, which ArcelorMittal is threatening to abandon over a legal row with the government, is seen in Taranto, Italy, November 8, 2019. REUTERS/Ciro De Luca

The Ilva steel plant, which ArcelorMittal is threatening to abandon over a legal row with the government, is seen in Taranto, Italy, November 8, 2019. REUTERS/Ciro De Luca

Ilva steel plant workers are seen outside the plant during a 24-hour strike against for thousands of job cuts at the troubled Ilva unit which it is threatening to abandon over a legal row with the government, in Taranto, Italy, November 8, 2019. REUTERS/Ciro De Luca

The Ilva steel plant, which ArcelorMittal is threatening to abandon over a legal row with the government, is seen in Taranto, Italy, November 8, 2019. REUTERS/Ciro De Luca

The Ilva steel plant, which ArcelorMittal is threatening to abandon over a legal row with the government, is seen in Taranto, Italy, November 8, 2019. REUTERS/Ciro De Luca

Ilva steel plant workers are seen outside the plant during a 24-hour strike against ArcelorMittal's plan for thousands of job cuts at the troubled Ilva unit which it is threatening to abandon over a legal row with the government, in Taranto, Italy, November 8, 2019. REUTERS/Ciro De Luca

Steel rolls are lined up at the ArcelorMittal steel plant in Sestao, Spain, November 12, 2018. REUTERS/Vincent West

A worker walks past steel rolls at the ArcelorMittal steel plant in Sestao, Spain, November 12, 2018. REUTERS/Vincent West

Steel rolls are lined up at the ArcelorMittal steel plant in Sestao, Spain, November 12, 2018. REUTERS/Vincent West

Steel rolls are lined up at the ArcelorMittal steel plant in Sestao, Spain, November 12, 2018. REUTERS/Vincent West

Steel rolls are lined up at the ArcelorMittal steel plant in Sestao, Spain, November 12, 2018. REUTERS/Vincent West

Steel rolls are lined up at the ArcelorMittal steel plant in Sestao, Spain, November 12, 2018. REUTERS/Vincent West

A steel roll is moved by the crane at the ArcelorMittal steel plant in Sestao, Spain, November 12, 2018. REUTERS/Vincent West

A worker walks past steel rolls at the ArcelorMittal steel plant in Sestao, Spain, November 12, 2018. REUTERS/Vincent West

A steel roll is moved by the crane at the ArcelorMittal steel plant in Sestao, Spain, November 12, 2018. REUTERS/Vincent West

A steel roll is moved by the crane at the ArcelorMittal steel plant in Sestao, Spain, November 12, 2018. REUTERS/Vincent West