After a delay lasting two years, construction began last month on a $2-billion chemical plant in Zhangzhou, in China’s Fujian Province. The plant site is on the Gulei peninsula, 50 miles from Zhangzhou, a city with 4 million people. Officials in neighboring Xiamen, the original site, cancelled the project in 2007 following protests over potential pollution and health problems. Central-government agencies reassessed the project, and in January the Ministry of Environmental Protection approved an environmental impact review. The plant owner is Tenglong Aromatic PX Co. Ltd., whose parent company is the Xianglu Group, from Taiwan. The plant will produce paraxylene
Arch dams, classically curved monoliths situated in narrow valleys, are not as common as other types of dams, such as embankment dams and gravity dams. ENR takes a look at some of the biggest arch dams in the world, both completed and under construction.