CHANGZHOU, CHINA - MAY 13: Workers are seen reflected in a glass window at computer terminals in the production area of the Zhong Tian (Zenith) Steel Group Corporation on May 13, 2016 in Changzhou, Jiangsu. Zhong Tian (Zenith) Steel Group Corporation is a privately-owned manufacturer that employs over 13,000 workers at its facility in China's eastern Jiangsu province. Since 2001, the company says it has adopted new technology to streamline the production of premium quality steel and to reduce environmental impact. The majority of its steel output is for the Chinese market with 20% earmarked for export, mostly to Asia. The company says it is profitable, but admits business has dropped marginally from past years. China is the world's largest steel producer, accounting for over 50% of global supply. China's government has vowed to cut production capacity at state-owned enterprises by up to 150 million tonnes over five years to ease concerns of an oversupply on global markets. However, its efforts appear to be overshadowed by a recent increase in steel prices that has revived production at some Chinese facilities that had been closed down. (Photo by Kevin Frayer/Getty Images)

CHANGZHOU, CHINA - MAY 12: A worker takes samples for quality of molten iron from a furnace at the Zhong Tian (Zenith) Steel Group Corporation on May 12, 2016 in Changzhou, Jiangsu. Zhong Tian (Zenith) Steel Group Corporation is a privately-owned manufacturer that employs over 13,000 workers at its facility in China's eastern Jiangsu province. Since 2001, the company says it has adopted new technology to streamline the production of premium quality steel and to reduce environmental impact. The majority of its steel output is for the Chinese market with 20% earmarked for export, mostly to Asia. The company says it is profitable, but admits business has dropped marginally from past years. China is the world's largest steel producer, accounting for over 50% of global supply. China's government has vowed to cut production capacity at state-owned enterprises by up to 150 million tonnes over five years to ease concerns of an oversupply on global markets. However, its efforts appear to be overshadowed by a recent increase in steel prices that has revived production at some Chinese facilities that had been closed down. (Photo by Kevin Frayer/Getty Images)

CHANGZHOU, CHINA - MAY 12: A worker supervises the production of molten iron at a furnace in the production area of the Zhong Tian (Zenith) Steel Group Corporation on May 12, 2016 in Changzhou, Jiangsu. Zhong Tian (Zenith) Steel Group Corporation is a privately-owned manufacturer that employs over 13,000 workers at its facility in China's eastern Jiangsu province. Since 2001, the company says it has adopted new technology to streamline the production of premium quality steel and to reduce environmental impact. The majority of its steel output is for the Chinese market with 20% earmarked for export, mostly to Asia. The company says it is profitable, but admits business has dropped marginally from past years. China is the world's largest steel producer, accounting for over 50% of global supply. China's government has vowed to cut production capacity at state-owned enterprises by up to 150 million tonnes over five years to ease concerns of an oversupply on global markets. However, its efforts appear to be overshadowed by a recent increase in steel prices that has revived production at some Chinese facilities that had been closed down. (Photo by Kevin Frayer/Getty Images)

This picture taken on March 28, 2016 shows a sign reading "Enter tourism area of Lumpur Panas (Mud Volcano)" at a mud volcano area in Sidoarjo, East Java. A mud volcano that erupted in central Indonesia a decade ago and swallowed entire villages is still oozing its all-consuming sludge, but for some entrepreneurial locals it has provided an unlikely business opportunity. "Mud tourism" is booming, as visitors flock to see rooftops poking above the giant bubbling lake, life-size statues made of mud and haunting memorials to one of the countrys worst environmental disasters. / AFP PHOTO / ADEK BERRY / To go with AFP story 'Indonesia-science-mud-volcano-tourism',FEATURE by Nick PerryADEK BERRY/AFP/Getty Images

This picture taken on March 28, 2016 shows Indonesian workers using abandoned land to dry fish at a mud volcano area in Sidoarjo, East Java. A mud volcano that erupted in central Indonesia a decade ago and swallowed entire villages is still oozing its all-consuming sludge, but for some entrepreneurial locals it has provided an unlikely business opportunity. "Mud tourism" is booming, as visitors flock to see rooftops poking above the giant bubbling lake, life-size statues made of mud and haunting memorials to one of the countrys worst environmental disasters. / AFP PHOTO / ADEK BERRY / To go with AFP story 'Indonesia-science-mud-volcano-tourism',FEATURE by Nick PerryADEK BERRY/AFP/Getty Images

This picture taken on March 28, 2016 shows an Indonesian man standing inside his food stall with a sign displayed on the wall reading "We are residents of Kedungbanteng and strongly reject the drilling by PT Lapindo Brantas Inc.", who was drilling in the area at the time of the 2006 mud eruption, near a mud volcano area in Sidoarjo, East Java. A mud volcano that erupted in central Indonesia a decade ago and swallowed entire villages is still oozing its all-consuming sludge, but for some entrepreneurial locals it has provided an unlikely business opportunity. "Mud tourism" is booming, as visitors flock to see rooftops poking above the giant bubbling lake, life-size statues made of mud and haunting memorials to one of the countrys worst environmental disasters. / AFP PHOTO / ADEK BERRY / To go with AFP story 'Indonesia-science-mud-volcano-tourism',FEATURE by Nick PerryADEK BERRY/AFP/Getty Images

This picture taken on March 28, 2016 shows an Indonesian man working at a mud volcano area in Sidoarjo, East Java. A mud volcano that erupted in central Indonesia a decade ago and swallowed entire villages is still oozing its all-consuming sludge, but for some entrepreneurial locals it has provided an unlikely business opportunity. "Mud tourism" is booming, as visitors flock to see rooftops poking above the giant bubbling lake, life-size statues made of mud and haunting memorials to one of the countrys worst environmental disasters. / AFP PHOTO / ADEK BERRY / To go with AFP story 'Indonesia-science-mud-volcano-tourism',FEATURE by Nick PerryADEK BERRY/AFP/Getty Images

This picture taken on March 28, 2016 shows the remains of houses left by owners who received compensation from oil and gas company PT Lapimdo Brantas, who was drilling in the area at the time of the 2006 mud eruption, near a mud volcano area in Sidoarjo, East Java. A mud volcano that erupted in central Indonesia a decade ago and swallowed entire villages is still oozing its all-consuming sludge, but for some entrepreneurial locals it has provided an unlikely business opportunity. "Mud tourism" is booming, as visitors flock to see rooftops poking above the giant bubbling lake, life-size statues made of mud and haunting memorials to one of the countrys worst environmental disasters. / AFP PHOTO / ADEK BERRY / To go with AFP story 'Indonesia-science-mud-volcano-tourism',FEATURE by Nick PerryADEK BERRY/AFP/Getty Images