The Deepwater Horizon oil rig burns in the Gulf of Mexico in April 2010. The rig's crew were new to their positions just before the explosion. Such staffing reorganizations are increasingly common as the industry grapples with a staffing shortage.
U.S. Coast Guard/Getty Images
A Shell-owned ethylene cracker plant on Pulau Bukom, Singapore. Several U.S. states are competing for a similar plant the company plans to build in northern Appalachia.
Courtesy of Shell Chemicals