Healthcare workers arrive with doses of COVISHIELD, a coronavirus disease (COVID-19) vaccine manufactured by Serum Institute of India, to be administered to workers of a brick kiln at Kavitha village on the outskirts of Ahmedabad, India, April 8, 2021. REUTERS/Amit Dave

Healthcare workers arrive with doses of COVISHIELD, a coronavirus disease (COVID-19) vaccine manufactured by Serum Institute of India, to be administered to workers of a brick kiln at Kavitha village on the outskirts of Ahmedabad, India, April 8, 2021. REUTERS/Amit Dave

A healthcare worker checks the temperature of a woman inside her hut during a coronavirus disease (COVID-19) vaccination drive at a brick kiln at Kavitha village on the outskirts of Ahmedabad, India, April 8, 2021. REUTERS/Amit Dave

A healthcare worker checks the temperature of a boy during a coronavirus disease (COVID-19) vaccination drive at a brick kiln at Kavitha village on the outskirts of Ahmedabad, India, April 8, 2021. REUTERS/Amit Dave

Healthcare workers arrive with doses of COVISHIELD, a coronavirus disease (COVID-19) vaccine manufactured by Serum Institute of India, to be administered to workers of a brick kiln at Kavitha village on the outskirts of Ahmedabad, India, April 8, 2021. REUTERS/Amit Dave

A brick kiln worker receives a dose of COVISHIELD, a coronavirus disease (COVID-19) vaccine manufactured by Serum Institute of India, at Kavitha village on the outskirts of Ahmedabad, India, April 8, 2021. REUTERS/Amit Dave

A healthcare worker collects details from a worker during a (COVID-19) vaccination drive at a brick kiln at Kavitha village on the outskirts of Ahmedabad, India, April 8, 2021. REUTERS/Amit Dave

Healthcare workers arrive with doses of COVISHIELD, a coronavirus disease (COVID-19) vaccine manufactured by Serum Institute of India, to be administered to workers of a brick kiln at Kavitha village on the outskirts of Ahmedabad, India, April 8, 2021. REUTERS/Amit Dave

A healthcare worker wearing personal protective equipment (PPE) collects swab from a man for a rapid antigen test at a brick kiln, amidst a coronavirus disease (COVID-19) outbreak in the western state, in village Rajoda, Gujarat, India, September 18, 2020. REUTERS/Amit Dave

A healthcare worker wearing personal protective equipment (PPE) takes swab from a man for a rapid antigen test at a brick kiln, amidst a coronavirus disease (COVID-19) outbreak in the western state, in village Rajoda, Gujarat, India, September 18, 2020. REUTERS/Amit Dave

A healthcare worker wearing personal protective equipment (PPE) takes swab from a man for a rapid antigen test at a brick kiln, amidst a coronavirus disease (COVID-19) outbreak in the western state, in the village Rajoda, Gujarat, India, September 18, 2020. REUTERS/Amit Dave

Mustapha, 60, a brick maker, piles up bricks after removing them from a kiln at an open-air factory on Tuti Island, Khartoum, Sudan, February 20, 2020. "I fear that we will not gain any advantage from the Dam that Ethiopia is building. I am not an expert but I think the amount of water as well as mud will decrease. We usually get the mud when the Nile overflows", said Mustapha. REUTERS/Zohra Bensemra SEARCH "BENSEMRA NILE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Mohamed Ahmed al Ameen (L), 55, and Mustapha (R), 60, who are both brick makers, prepare bricks to be fired in a kiln at an open-air factory on Tuti Island, Khartoum, Sudan, February 12, 2020. REUTERS/Zohra Bensemra SEARCH "BENSEMRA NILE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY

Steam rises from the kilns at West Fraser Pacific Inland Resources sawmill in Smithers, British Columbia, Canada February 4, 2020. REUTERS/Jesse Winter

People work in a brick kiln in Narayanganj, Bangladesh, January 8, 2020. REUTERS/Mohammad Ponir Hossain TPX IMAGES OF THE DAY

People are working in a brick kiln in Narayanganj, Bangladesh, January 8, 2020. REUTERS/Mohammad Ponir Hossain

Labourers coat bricks with a mixture of mud and cow dung in a brick kiln at Langolpota village in North 24 Parganas district in the eastern state of West Bengal, India, November 26, 2019. Picture taken November 26, 2019. REUTERS/Ranita Roy

Labourers coat bricks with a mixture of mud and cow dung in a brick kiln at Langolpota village in North 24 Parganas district in the eastern state of West Bengal, India, November 26, 2019. Picture taken November 26, 2019. REUTERS/Ranita Roy TPX IMAGES OF THE DAY

A labourer unloads a mixture of mud and cow dung from a cart in a brick kiln at Langolpota village in North 24 Parganas district in the eastern state of West Bengal, India, November 26, 2019. Picture taken November 26, 2019. REUTERS/Ranita Roy

A labourer prepares a mixture of mud and cow dung to use it in the oven in a brick kiln at Langolpota village in North 24 Parganas district in the eastern state of West Bengal, India, November 26, 2019. Picture taken November 26, 2019. REUTERS/Ranita Roy

Labourers coat bricks with a mixture of mud and cow dung in a brick kiln at Langolpota village in North 24 Parganas district in the eastern state of West Bengal, India, November 26, 2019. Picture taken November 26, 2019. REUTERS/Ranita Roy

A labourer carries bricks in a kiln at Langolpota village in North 24 Parganas district in the eastern state of West Bengal, India, November 26, 2019. Picture taken November 26, 2019. REUTERS/Ranita Roy

A labourer pushes a cart in a brick kiln at Langolpota village in North 24 Parganas district in the eastern state of West Bengal, India, November 26, 2019. Picture taken November 26, 2019. REUTERS/Ranita Roy

A labourer carries bricks in a kiln at Langolpota village in North 24 Parganas district in the eastern state of West Bengal, India, November 26, 2019. Picture taken November 26, 2019. REUTERS/Ranita Roy TPX IMAGES OF THE DAY

A labourer carries bricks in a kiln at Langolpota village in North 24 Parganas district in the eastern state of West Bengal, India, November 26, 2019. Picture taken November 26, 2019. REUTERS/Ranita Roy

Labourers carry buckets filled with a mixture of mud and cow dung to make an oven in a brick kiln at Langolpota village in North 24 Parganas district in the eastern state of West Bengal, India, November 26, 2019. Picture taken November 26, 2019. REUTERS/Ranita Roy

A hand of a labourer covered with a mixture of mud and cow dung is seen in a brick kiln at Langolpota village in North 24 Parganas district in the eastern state of West Bengal, India, November 26, 2019. Picture taken November 26, 2019. REUTERS/Ranita Roy

A labourer makes bricks in a kiln at Langolpota village in North 24 Parganas district in the eastern state of West Bengal, India, November 26, 2019. Picture taken November 26, 2019. REUTERS/Ranita Roy

A man holding a statue walks past a kiln in Jingdezhen, also known as China's porcelain capital, in Jiangxi province, China June 23, 2019. Picture taken June 23, 2019. REUTERS/Jason Lee

Chinese traditional ceramic statues are moved out of a kiln plant in Jingdezhen, also known as China's porcelain capital, in Jiangxi province, China June 24, 2019. Picture taken June 24, 2019. REUTERS/Jason Lee

An employee prepares to fire statues portraying late Chinese chairman Mao Zedong in a kiln in Jingdezhen, Jiangxi province, China, June 24, 2019. REUTERS/Jason Lee

An employee sits in a room with statues portraying late Chinese chairman Mao Zedong that are waiting to be fired at a kiln plant in Jingdezhen, Jiangxi province, China, June 24, 2019. REUTERS/Jason Lee SEARCH "LEE STATUES" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

A brick kiln owned by Kuldeep Singh Sengar, a legislator of the ruling Bharatiya Janata Party (BJP), accused of raping a young woman, is seen in Unnao, in the northern state of Uttar Pradesh, India, July 31, 2019. Picture taken July 31, 2019. REUTERS/Danish Siddiqui

Laborers move baked bricks from an oven at a kiln on the outskirts of Peshawar, Pakistan March 13, 2019. REUTERS/Fayaz Aziz

People walk along a pond to fetch water as smoke rises from the brick kiln in Lalitpur, Nepal January 29, 2019. REUTERS/Navesh Chitrakar

A worker moves bricks from a kiln at a brick factory on the outskirts of Sanaa, Yemen July 11, 2018. Picture taken July 11, 2018. REUTERS/Khaled Abdullah

A woman carries bricks on her head at a brick kiln on the outskirts of Mumbai, India April 24, 2018. REUTERS/Francis Mascarenhas

A worker pushes pottery made to celebrate the Royal Wedding between Prince Harry and Meghan Markle in to a kiln at Halcyon Days' Caverswall factory in Stoke-on-Trent, Britain February 27, 2018. Picture taken February 27, 2018. REUTERS/Darren Staples

A worker closes the door to a kiln containing pottery made to celebrate the Royal Wedding between Prince Harry and Meghan Markle in to a kiln at Halcyon Days' Caverswall factory in Stoke-on-Trent, Britain February 27, 2018. Picture taken February 27, 2018. REUTERS/Darren Staples

Labourers work at brick kilns along the river Ganges in Raytala, south of Kolkata, India, April 11, 2017. REUTERS/Danish Siddiqui SEARCH "SIDDIQUI GANGES" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Workers work at a brick kiln on the outskirts of Yangon, Myanmar April 26, 2017. REUTERS/Soe Zeya Tun

Children pass their time while their parents work at a brick kiln on the outskirts of Yangon, Myanmar April 26, 2017. REUTERS/Soe Zeya Tun

Workers work at a brick kiln on the outskirts of Yangon, Myanmar April 26, 2017. REUTERS/Soe Zeya Tun

A boy sits while his parents work at a brick kiln on the outskirts of Yangon, Myanmar April 26, 2017. REUTERS/Soe Zeya Tun

A worker pushes old shoes into the kiln of a brick factory in Islamabad, Pakistan March 9, 2017. REUTERS/Caren Firouz

A worker carries shoes to be burned in the kiln of a brick factory in Islamabad, Pakistan March 9, 2017. REUTERS/Caren Firouz

A man gets his horse ready to go get more bricks for the kiln at a brick factory in Islamabad, Pakistan March 9, 2017. REUTERS/Caren Firouz

Phung Thi Hai, 54, carries bricks at a factory outside Hanoi, Vietnam, February 27, 2017. Hai is among a group of 25 women working at a brick factory where she has to move 3,000 bricks a day to the kiln. "How unfair that a 54-year-old woman like me has to work and take care of the whole family. With the same work male labourers can get a better income. Not only me, all women in the village work very hard with no education, no insurance and no future," Hai said. REUTERS/Kham SEARCH "WOMEN WORK" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

A bottle kiln stands in front of the Smithfield building after a by-election was called in Stoke on Trent, Britain February 10, 2017. Picture taken February 10, 2017. REUTERS/Darren Staples

The late afternoon sun shines on the large bottle kiln at Price and Kensington, which still manufactures traditional pottery, in Stoke-on-Trent, Britain February 10, 2017. REUTERS/Carl Recine

Labourers work at a brick kiln on the outskirts of Agartala, India, January 17, 2017. REUTERS/Jayanta Dey

Rukmani Rajhansiya, rescued from debt bondage from a brick kiln in 2012, is seen at her home in Sargul village in the eastern Indian state of Odisha, August 31, 2016. Picture taken August 31, 2016. To match Feature INDIA-WORKERS/BONDAGE REUTERS/Anuradha Nagaraj

Labourers work on a kiln as they make bricks at a factory on the outskirt of Sanaa, Yemen, June 1, 2016. Picture taken June 1, 2016. REUTERS/Mohamed al-Sayaghi SEARCH "BRICK MUD" FOR THIS STORY. SEARCH "THE WIDER IMAGE" FOR ALL STORIES.

Labourers carry dried bricks to be stacked inside a kiln, where they will be fired, at a factory on the outskirt of Sanaa, Yemen, May 29, 2016. Picture taken May 29, 2016. REUTERS/Mohamed al-Sayaghi SEARCH "BRICK MUD" FOR THIS STORY. SEARCH "THE WIDER IMAGE" FOR ALL STORIES.

A labourer looks at bricks being fired in a kiln at a factory on the outskirt of Sanaa, Yemen, June 1, 2016. Picture taken June 1, 2016. REUTERS/Mohamed al-Sayaghi SEARCH "BRICK MUD" FOR THIS STORY. SEARCH "THE WIDER IMAGE" FOR ALL STORIES.

Labourers stack dried bricks inside a kiln, where they will be fired, at a brick factory on the outskirt of Sanaa, Yemen, June 1, 2016. Picture taken June 1, 2016. REUTERS/Mohamed al-Sayaghi SEARCH "BRICK MUD" FOR THIS STORY. SEARCH "THE WIDER IMAGE" FOR ALL STORIES.

A worker stands on bricks as he works at a kiln on the outskirt of Sanaa, Yemen, June 1, 2016. Picture taken June 1, 2016. REUTERS/Mohamed al-Sayaghi SEARCH "BRICK MUD" FOR THIS STORY. SEARCH "THE WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY

"QUALITY REPEAT"A boy sleeps in a hammock while his mother works at a brick kiln on the outskirts of Yangon February 1, 2015. REUTERS/Soe Zeya Tun

A labourer carries bricks at a kiln in Karjat, India, March 10, 2016. Thousands of brick kiln workers in India's western Maharashtra state are learning from activists that they have the right to a minimum wage, basic amenities and fair treatment - but remain in debt bondage to owners who deny them these rights with impunity. REUTERS/Danish Siddiqui

A labourer prepares a mixture for making mud bricks at a kiln in Karjat, India, March 10, 2016. Thousands of brick kiln workers in India's western Maharashtra state are learning from activists that they have the right to a minimum wage, basic amenities and fair treatment - but remain in debt bondage to owners who deny them these rights with impunity. REUTERS/Danish Siddiqui