Omar Faruq writhes in pain as medics stitch up his leg in a makeshift first aid hut at a ship-breaking yard on Bangladesh's southeastern coast.
The 16-year-old needed five stitches after a sharp corner of a metal sheet sliced open his shin, forcing him off work for two days.
Faruq is one of 30,000 men who work around the clock on a 10-kilometre (six-mile) stretch of coastline in Sitakundu, dismantling old ships in possibly the world's biggest open-air workshop.
For years, Alang in western India has been the world's largest ship dismantler, but earlier this year Sitakundu outpaced it, according to the Bangladesh Ship Breakers' Association (BSBA).
The association says demand for steel is booming in Bangladesh, due to six percent annual growth over the past four years, the biggest boom period in the country's history.
Sitakundu's 22 ship-breaking yards demolished one million tonnes of steel in the year ended June 30, according to the BSBA.
Once removed from the old ships, steel plates are melted down by Bangladesh's 200 small re-rolling mills and turned into steel rods.
Yard owner Alhaj Mohamed Yusuf says Sitakundu's frequent tides and low wages have made it the best place in the world to break ships.
"Due to frequent tides we can beach the ship just two hundred yards (metres) from the coast," he says.
"It saves us thousands of dollars for every ship we break, whereas in Alang and China they beach ships two or three kilometres out into the sea."
Bangladesh, with a population of 144 million people, also has some of the world's cheapest labour costs, he says.
Yusuf says the natural conditions, combined with growing demand for steel, have also attracted bigger ships to the yards.
"We're handling ships as big as 80,000 tonnes these days," he says.
To capitalise on the boom, he is planning to open a steel mill by the end of the year.
Unlike neighbouring India, Bangladesh has no iron ore and is dependent on imported steel -- either from scrap or more expensive billets, Yusuf says.
"It's a lifeline for Bangladesh," says Alihussein Akberali, managing director of Bangladesh Steel Rerolling Mills (BSRM), the country's largest steel producer.
"The rods made from scrap ships are inferior to those made by top steel producers, but they're at least 20 percent cheaper than high-grade steel and therefore are overwhelmingly used in the country's construction industry."
Like all commodities, prices of steel have experienced a sharp rise in recent years.
Akberali says two and a half years ago, he was paying almost a third of what he pays now for billets from India.
"Back then we were paying 430 dollars a tonne. About three months ago it was about 940 dollars a tonne but in May, India introduced a 15 percent export tax and the price is now around 1,150 to 1,200 dollars."
FR Khan is managing director of Asset Development, one of the biggest apartment construction businesses in the country.
Khan says steel that originated in the country's ship-breaking yards is mainly used in non-structural aspects of his buildings, but he is working with designers to come up with new ways to maximise the cheaper steel.
"In the global context of rising costs, every penny counts right now," he says.
The ship demolition business has long been a subject of controversy over its environmental impact and backbreaking working conditions.
Mohammed Ali Shahin, who works with non-governmental ship-breaking organisation Young Power in Social Action (YPSA), says official figures show that 10 workers have died in Bangladeshi ship yards this year.
However, he estimates the number to be much higher because there is no union dedicated to workers and no official worker numbers.
He says few workers wear protective gear in the yards.
"It's a very hazardous job. Our question is, is the amount of steel supplied really enough compensation for the damage the industry is doing to workers and the environment," he says.
But Yusuf shrugs off the criticism.
"The ships are being recycled so we are helping the environment," he insists. "We are also providing jobs in a poor country."
"We don't dump anything into the sea because everything is worth money so we sell it -- even the old oil," he says.
For 16-year-old worker Faruq, fears about safety are not enough to keep him away from his job.
"I'm always afraid of these sorts of accident. On the other hand I'm more afraid of not getting money if I don't come to work," he says.