As BP struggles to cap a leaking oil well in the Gulf of Mexico, the company is signing up fishermen onshore to help with cleanup. Photo: Craig Guillot landlocked Nicky Alfonso pulled his crab pots out of the water within days of the rig explosion. Lanvin LeBlanc, a Lafitte, La., resident, is one of more than 700 fisherman signed on so far. He single-handedly runs a 38-ft shrimp skiff. When officials closed the waters to all fishing between the mouth of the Mississippi River and Florida’s Pensacola Bay on May 2, LeBlanc effectively was put out of business. “This is
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.