Rescue workers conduct a search operation for survivors at the site of a collapsed 11-storey building that was under construction on the outskirts of the southern Indian city of Chennai June 29, 2014. Two building collapses in New Delhi and Tamil Nadu states killed at least 11 people on Saturday and left dozens trapped, highlighting the need for increased monitoring of construction across India where such incidents are common. REUTERS/Babu (INDIA - Tags: DISASTER TPX IMAGES OF THE DAY) 

Rescue workers conduct a search operation for survivors at the site of a collapsed 11-storey building that was under construction on the outskirts of the southern Indian city of Chennai June 28, 2014. Two building collapses in New Delhi and Tamil Nadu states killed at least 11 people on Saturday and left dozens trapped, highlighting the need for increased monitoring of construction across India where such incidents are common. REUTERS/Babu (INDIA - Tags: DISASTER TPX IMAGES OF THE DAY) 

Pizzas are placed among other food offerings on an altar dedicated to the missing and dead passengers on board the capsized Sewol ferry, at a port where many family members are waiting for news from the search and rescue team in Jindo, April 28, 2014. More than 300 people, most of them students and teachers from the Danwon High School, are dead or missing presumed dead after the April 16 disaster. The Sewol ferry, weighing almost 7,000 tons, sank on a routine trip from the port of Incheon, near Seoul, to the southern holiday island of Jeju. Investigations are focused on human error and mechanical failure. REUTERS/Kim Kyung-Hoon (SOUTH KOREA - Tags: DISASTER RELIGION TRANSPORT MARITIME FOOD) 

Austrian police and firefighters stand in front of a partially collapsed house in Vienna April 26, 2014. The house collapsed after an explosion and five residents were seriously injured, according to police. The cause of the explosion was unclear, according to the authorities. REUTERS/Leonhard Foeger (AUSTRIA - Tags: DISASTER TPX IMAGES OF THE DAY) 

Fatema holds a picture of her son Nurul Karim as she poses for a photograph in front of her slum house in Savar April 21, 2014. Fatema lost her son Nurul Karim and her daugher Arifa, who were working on the fifth floor of Rana Plaza when it collapsed on April 24, 2013. A year after the world's worst textile factory disaster, hundreds of survivors and families of victims are still struggling to rebuild their lives from the rubble of the Rana Plaza factory disaster that claimed more than 1,100 lives. REUTERS/Andrew Biraj (BANGLADESH - Tags: DISASTER BUSINESS EMPLOYMENT ANNIVERSARY TPX IMAGES OF THE DAY) 

A New York City firefighter looks at the rubble at the site of a building explosion in the Harlem section of New York, March 13, 2014. Search crews picked through still-smouldering rubble on Thursday, looking for survivors of a gas explosion that caused the collapse of two New York apartment buildings a day earlier, killing seven people and injuring about 60. REUTERS/Brendan McDermid (UNITED STATES - Tags: DISASTER) SOCIETY) 

New York City firefighters work at the site of a building explosion and collapse in the Harlem section of New York, March 12, 2014. Two New York City buildings collapsed on Wednesday in an explosion believed to be caused by a gas leak, killing two people, injuring at least 36, and setting off a search for more victims feared trapped in the rubble, officials said. REUTERS/Brendan McDermid (UNITED STATES - Tags: DISASTER SOCIETY TPX IMAGES OF THE DAY) 

A sign is seen on a church door near the rubble of an apparent building explosion fire and collapse in the Harlem section of New York, March 12, 2014. Two New York buildings collapsed on Wednesday in an explosion believed to be caused by a gas leak, killing two people, injuring at least 22, and setting off a search for more feared trapped in the debris, officials said. REUTERS/Eric Thayer (UNITED STATES - Tags: DISASTER SOCIETY RELIGION) 

A camera drone flown by Brian Wilson flies near the scene where two buildings were destroyed in an explosion, in the East Harlem section in New York City, March 12, 2014. Two New York buildings collapsed on Wednesday in an explosion believed to be caused by a gas leak, killing two people, injuring at least 22, and setting off a search for more feared trapped in the debris, officials said. REUTERS/Mike Segar (UNITED STATES - Tags: DISASTER SCIENCE TECHNOLOGY) 

A musician from the "Poopo Banda" reacts after a footbridge collapsed during Carnival parade in Oruro, March 1, 2014. Two musicians were killed and dozens injured, local media reported. REUTERS/Gaston Brito (BOLIVIA - Tags: DISASTER SOCIETY TPX IMAGES OF THE DAY) 

Emergency services look at the roof of the Apollo Theatre on Shaftesbury Avenue after part of the ceiling collapsed in central London December 19, 2013. Emergency services said nearly 90 people had been injured in a packed London theatre on Thursday when part of the ceiling collapsed during a performance, bringing the city's West End theatre district to a standstill.The audience was showered with masonry and debris following the incident at the Apollo Theatre, where about 720 people including many families were watching the hugely popular play "The Curious Incident of the Dog in the Night-Time". REUTERS/Neil Hall (BRITAIN - Tags: ENTERTAINMENT DISASTER TPX IMAGES OF THE DAY) 

Emergency services use a cherry picker to look at the roof of the Apollo Theatre on Shaftesbury Avenue after part of the ceiling collapsed in central London December 19, 2013. Emergency services said nearly 90 people had been injured in a packed London theatre on Thursday when part of the ceiling collapsed during a performance, bringing the city's West End theatre district to a standstill.The audience was showered with masonry and debris following the incident at the Apollo Theatre, where about 720 people including many families were watching the hugely popular play "The Curious Incident of the Dog in the Night-Time". REUTERS/Neil Hall (BRITAIN - Tags: DISASTER ENTERTAINMENT) 

A man receives medical attention after part of the ceiling at the Apollo Theatre on Shaftesbury Avenue collapsed in central London December 19, 2013. Emergency services said nearly 90 people had been injured in a packed Londontheatre on Thursday when part of the ceiling collapsed during a performance, bringing the city's West End theatre district to a standstill.The audience was showered with masonry and debris following the incident at the Apollo Theatre, where about 720 people including many families were watching the hugely popular play "The Curious Incident of the Dog in the Night-Time". REUTERS/Neil Hall (BRITAIN - Tags: ENTERTAINMENT DISASTER TPX IMAGES OF THE DAY) 

Firefighters work inside a collapsed supermarket in Riga November 24, 2013. Rescue workers and firefighter teams resume the search of the rubble of a supermarket collapse that killed at least 54 people in a disaster that Latvia's president called "murder". REUTERS/Ints Kalnins (LATVIA - Tags: DISASTER) 

A relative of a garment worker, who is still missing after the Rana Plaza building collapse, cries during a protest in front of the site in Savar November 24, 2013. Hundreds of garment workers and activists gathered in front of the Rana Plaza site seven months after its collapse, to mark the one year anniversary of a fire incident in the Tazreen Fashions factory which killed more than 100 workers. The protesters demanded to arrest the owner of Tazreen Fashions and asked for compensation, local media reported. REUTERS/Andrew Biraj (BANGLADESH - Tags: CIVIL UNREST BUSINESS EMPLOYMENT ANNIVERSARY DISASTER) 

Nasima mourns on the grave of her daughter Akhi after her body was identified at a mass grave yard, where all the unidentified victims of Rana Plaza were buried, in Dhaka November 7, 2013. The National Forensic DNA Profiling Laboratory announced on Monday that the identities of 157 people, out of 322 unidentified victims of the Rana Plaza building collapse, have been ascertained through DNA tests, local media reported. REUTERS/Andrew Biraj (BANGLADESH - Tags: DISASTER SOCIETY) 

A rescuer walks past the rubble of an apartment building that collapsed on Saturday night, in Medellin October 13, 2013. Rescue workers are conducting searches for at least eight missing construction workers who visited the building to assess its condition after large cracks were discovered in its structure. Authorities had evacuated residents from the building on Friday. REUTERS/Albeiro Lopera (COLOMBIA - Tags: DISASTER TPX IMAGES OF THE DAY) 

A paramedic looks out from an ambulance as rescue operations continue for survivors at the site of a collapsed residential building in Mumbai September 28, 2013. Twenty-five people were killed and 32 injured when the five-storey building came crashing down in south Mumbai on Friday morning, local media quoted officials as saying. REUTERS/Danish Siddiqui (INDIA - Tags: DISASTER HEALTH) 

Rescue workers use a stretcher to carry a man who was rescued from the rubble at the site of a collapsed residential building in Mumbai September 27, 2013. The five-storey apartment block collapsed on Friday in the Indian financial centre of Mumbai, killing at least four people and trapping scores in the latest accident to underscore shoddy building standards in Asia's third-largest economy. REUTERS/Danish Siddiqui (INDIA - Tags: DISASTER) 

Relatives of residents trapped under the rubble react at the site of a collapsed residential building in Mumbai September 27, 2013. The five-storey apartment block collapsed on Friday in the Indian financial centre of Mumbai, killing one person with dozens feared trapped in the latest accident to underscore shoddy building standards in Asia's third-largest economy. REUTERS/Danish Siddiqui (INDIA - Tags: DISASTER TPX IMAGES OF THE DAY) 

Rescue workers use a stretcher to carry a woman who was rescued from the rubble at the site of a collapsed residential building in Mumbai September 27, 2013. One person was killed and six injured when the five-storey building came crashing down in south Mumbai on Friday morning, local media quoted officials as saying. REUTERS/Danish Siddiqui (INDIA - Tags: DISASTER TPX IMAGES OF THE DAY) 

Villagers cross a collapsed bridge in Coyuca de Benitez in the Mexican state of Guerrero, September 21, 2013. Rescuers cleared mud from shattered houses on Friday, searching for dozens of people missing after a mudslide flattened their village in southwest Mexico as some of the most destructive storms to hit the country in decades abated. Guerrero state, home to waterlogged Pacific resort city Acapulco, was the hardest hit following the heavy rains unleashed by Hurricane Manuel last week. REUTERS/Henry Romero (MEXICO - Tags: DISASTER ENVIRONMENT TPX IMAGES OF THE DAY) 

A rescue worker searches for victims with a sniffer dog at the scene of a collapsed building, which was undergoing construction, in Sao Paulo August 27, 2013. According to local media, at least six people were killed and 19 others injured when the commercial building collapsed. REUTERS/Nacho Doce (BRAZIL - Tags: ANIMALS BUSINESS CONSTRUCTION DISASTER) 

A section of the Summer Bay Resort lies collapsed after a large sinkhole opened on the property's grounds in Clermont, Florida August 12, 2013. Dozens of guests at the Florida resort near Walt Disney World were evacuated early Monday, when at least two buildings partially collapsed due to the sinkhole, guests and resort employees said. REUTERS/David Manning (UNITED STATES - Tags: SOCIETY DISASTER TRAVEL ENVIRONMENT TPX IMAGES OF THE DAY) 

A construction vehicle lies where it was swallowed by a sinkhole on Saint-Catherine Street in downtown Montreal, August 5, 2013. REUTERS/Christinne Muschi (CANADA - Tags: DISASTER SOCIETY ENVIRONMENT TPX IMAGES OF THE DAY) 

Abdur Rahman holds a family photo of his wife Cahyna Akhter, a garment worker who died in the Rana Plaza building collapse incident, as he sits in front of the site in Savar August 2, 2013. Activists of different labour organisations built a Martyr's Monument at the site of collapsed Rana Plaza building, to mark the 100th-day anniversary of one of the world's biggest industrial disaster on Friday, local media reported. REUTERS/Andrew Biraj (BANGLADESH - Tags: DISASTER CIVIL UNREST TPX IMAGES OF THE DAY) 

Mustafizur (L) tries to comfort his wife Rebecca, 20, a garment worker rescued from the rubble of the collapsed Rana Plaza building, at the National Institute of Traumatology and Orthopaedic Rehabilitation (NITOR) in Dhaka July 3, 2013. The April 24 collapse of the Rana Plaza complex, built on swampy ground outside Dhaka with several illegal floors, killed 1,132 workers and focused international attention on sometimes lax safety standards in Bangladesh's booming garment industry. At least five different Bangladesh agencies have dispatched teams to start inspecting the country's thousands of garment factories, but there has been little coordination between them. More than four million people, mostly women, work in Bangladesh's clothing sector, which is the country's largest employment generator, with annual exports worth $21 billion. Picture taken July 3, 2013. REUTERS/Andrew Biraj (BANGLADESH - Tags: DISASTER BUSINESS EMPLOYMENT TEXTILE) 

Rojina, 25, a garment worker rescued from the rubble of the collapsed Rana Plaza building, lies on a bed at the Centre for Rehabilitation of Paralysis (CRP) in Savar June 4, 2013. A rescue worker had to amputate a part of her arm to save her. The April 24 collapse of the Rana Plaza complex, built on swampy ground outside Dhaka with several illegal floors, killed 1,132 workers and focused international attention on sometimes lax safety standards in Bangladesh's booming garment industry. At least five different Bangladesh agencies have dispatched teams to start inspecting the country's thousands of garment factories, but there has been little coordination between them. More than four million people, mostly women, work in Bangladesh's clothing sector, which is the country's largest employment generator, with annual exports worth $21 billion. Picture taken June 4, 2013. REUTERS/Andrew Biraj (BANGLADESH - Tags: DISASTER BUSINESS TEXTILE) 

A passenger jet is silhouetted against the moon as it flies over Shanghai July 19, 2013. REUTERS/Aly Song (CHINA - Tags: ENVIRONMENT TRANSPORT TPX IMAGES OF THE DAY) 

A portion of the street and pavement is seen caved in at the scene of a ruptured water matrix in Valparaiso city, about 121 km (75 miles) northwest of Santiago, July 14, 2013. A local health emergency was declared on Sunday, with the rupture causing an avalanche of mud, water and stones from the top of a hill, leaving two people with minor injuries, and 20 households directly affected, according to local media. REUTERS/Eliseo Fernandez (CHILE - Tags: DISASTER HEALTH TPX IMAGES OF THE DAY) 

Rescue workers use an excavator to scour through the debris of a collapsed residential building in Mumbra, in Thane district, on the outskirts of Mumbai June 21, 2013. At least nine people were killed and 14 injured when the building collapsed in the early hours on Friday, local media reported. REUTERS/Vivek Prakash (INDIA - Tags: DISASTER TPX IMAGES OF THE DAY) 

20-year-old seamstress Runi Akhter, a survivor of the rubble of collapsed Rana Plaza Building, stands in front of her slum house with relatives in Savar June 4, 2013. Akhter used to work in Phantom TAC Ltd garment factory in Rana Plaza. She is now unemployed and shares a two-room slum house with eight people, including her parents and two young children. Picture taken June 4, 2013. REUTERS/Andrew Biraj (BANGLADESH - Tags: DISASTER BUSINESS TEXTILE) 

Rescue workers stand amid rubble at the site of a collapsed residential building in Mumbai early June 11, 2013. One person was killed and four were rescued from under rubble when a section of the building collapsed in central Mumbai, local media quoted officials as saying. REUTERS/Vivek Prakash (INDIA - Tags: DISASTER BUSINESS CONSTRUCTION) 

A man stands on a pile of rubble as excavators work at the site of a collapsed residential building in Mumbai June 10, 2013. One person was killed and four were rescued from under rubble when a section of a building collapsed in Mumbai, local media quoted officials as saying. REUTERS/Vivek Prakash (INDIA - Tags: DISASTER) 

A cloud of dust from a nearby imploded building approaches the Statue of Liberty in New York June 9, 2013. REUTERS/Zoran Milich (UNITED STATES - Tags: CITYSCAPE TPX IMAGES OF THE DAY) 

A car is seen in the water as a span of highway bridge sits in the Skagit River May 24, 2013 after collapsing near the town of Mt Vernon, Washington late Thursday. The bridge collapse that sent cars and drivers tumbling into a frigid river in Washington state appears to have been caused when a semi-trailer truck carrying an oversize load struck a bridge support beam, officials said on Friday. The truck crossed the bridge safely before a portion of the structure collapsed, sending two vehicles and a mass of concrete and steel into the Skagit River Thursday evening. Three people had to be rescued, officials said. REUTERS/Cliff DesPeaux (UNITED STATES - Tags: DISASTER TRANSPORT SOCIETY) 

Kim Leap, 44, the mother of a worker who died during an accident in a shoe factory, cries near the coffin of her son in the Kong Pisei district of Kampong Speu province, 50 km (30 miles) west of the capital, Phnom Penh May 16, 2013. Three people were killed when the ceiling of a warehouse fell in at a shoe factory in Cambodia, a government minister said on Thursday, adding to concerns about safety standards at Asian factories producing cheap clothing. REUTERS/Samrang Pring (CAMBODIA - Tags: DISASTER OBITUARY BUSINESS) 

A soldier searches a site of the accident in a shoe factory in the Kong Pisei district of Kampong Speu province, 50 km (30 miles) west of the capital, Phnom Penh May 16, 2013. Three people were killed when the ceiling of a warehouse fell in at a shoe factory in Cambodia, a government minister said on Thursday, adding to concerns about safety standards at Asian factories producing cheap clothing. REUTERS/Samrang Pring (CAMBODIA - Tags: SOCIETY DISASTER) 

Reshma Begum, 19, rescued from the rubble of the Rana Plaza building 17 days after the building collapsed, speaks during a media conference at Savar Combined Military Hospital in Savar May 13, 2013. Bangladeshi salvage workers neared on Monday the end of their search for victims of the collapse of a factory building, scouring the basement of the complex that crumbled in on itself killing 1,127 people. REUTERS/Khurshed Rinku (BANGLADESH - Tags: DISASTER SOCIETY) 

Reshma Begum, 19, rescued from the rubble of the Rana Plaza building 17 days after the building collapsed, lies on a bed at Savar Combined Military Hospital in Savar May 11, 2013. REUTERS/Andrew Biraj (BANGLADESH - Tags: DISASTER TPX IMAGES OF THE DAY) 

Rikta Begum, 25, a garment worker rescued from the rubble of the collapsed Rana Plaza building lies on a bed at Enam Medical College in Savar, 30 km (19 miles) outside Dhaka May 4, 2013. Rescue workers rescued Rikta from the rubble 36 hours after the building collapsed and medical workers had to amputate an arm. Bangladesh urged the European Union not to take tough measures against its economically crucial textile industry in response to the collapse of a garment factory that killed nearly 550 people. REUTERS/Andrew Biraj (BANGLADESH - Tags: DISASTER BUSINESS EMPLOYMENT SOCIETY) 

A security guard sits in front of posters of missing people at a hospital in Savar, 30 km (19 miles) outside Dhaka May 4, 2013. Bangladesh urged the European Union not to take tough measures against its economically crucial textile industry in response to the collapse of a garment factory that killed nearly 550 people. REUTERS/Andrew Biraj (BANGLADESH - Tags: DISASTER BUSINESS EMPLOYMENT) 

A woman mourns for her husband, a garment worker who had died in the collapse of the Rana Plaza building, in Savar, around 30 km (19 miles) outside Dhaka May 4, 2013. Bangladesh urged the European Union not to take tough measures against its economically crucial textile industry in response to the collapse of a garment factory that killed nearly 550 people. REUTERS/Andrew Biraj (BANGLADESH - Tags: DISASTER BUSINESS EMPLOYMENT) 

A woman cries as she waits for news of her relative, a garment worker who is still missing, after the collapse of the Rana Plaza building in Savar, outside Dhaka May 3, 2013. Police investigating the collapse of a Bangladesh factory building that killed more than 500 people have arrested an engineer who warned the day before that the eight-storey complex was unsafe. REUTERS/Andrew Biraj (BANGLADESH - Tags: DISASTER TPX IMAGES OF THE DAY) 

Relatives try to identify bodies of unidentified garment workers, who died in the collapse of the Rana Plaza building in Savar, lying in a truck before a mass burial in Dhaka May 1, 2013. The European Union is considering trade action against Bangladesh, which has preferential access to EU markets for its garments, in order to pressure Dhaka to improve safety standards after the building collapse killed hundreds of factory workers. REUTERS/Andrew Biraj (BANGLADESH - Tags: DISASTER BUSINESS EMPLOYMENT) 

People gather in front of mass graves during the burial of unidentified garment workers, who died in the collapse of the Rana Plaza building in Savar, in Dhaka May 1, 2013. The European Union is considering trade action against Bangladesh, which has preferential access to EU markets for its garments, in order to pressure Dhaka to improve safety standards after the building collapse killed hundreds of factory workers. REUTERS/Andrew Biraj (BANGLADESH - Tags: DISASTER BUSINESS EMPLOYMENT) 

Garment workers try to break the gate of a factory during a protest to demand capital punishment for those responsible for the collapse of the Rana Plaza building in Savar, outside Dhaka April 29, 2013. Rescue officials in Bangladesh said on Monday they were unlikely to find more survivors in the rubble of the factory building that collapsed last week burying hundreds of garment workers in the country's worst industrial accident. REUTERS/Andrew Biraj (BANGLADESH - Tags: CIVIL UNREST POLITICS BUSINESS EMPLOYMENT)