The owners of the Alabama landfill that is taking about 10,000 tons per day of coal-ash waste from a collapsed Tennessee Valley Authority storage site in Kingston, Tenn., have filed for bankruptcy. Perry Uniontown Ventures I LLC, which owns the Arrowhead Landfill in Perry County, filed papers in federal court in Mobile last month saying facility operators Phillips & Jordan and Phill-Con Services are withholding money they have received from TVA. The operators claim an “outstanding balance” owed them by the owners. A spokesman for the landfill owners says the site will continue to operate, and a TVA official says
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.