As workers at Cianbro Cos.’s Eastern Manufacturing Facility in Brewer, Maine, load four massive petroleum refinery modules for barge shipment to Port Arthur, Texas, the firm’s chairman is touting a plan that could reap millions of dollars to spur construction of a new statewide green infrastructure. Peter G. Vigue, who also is Pittsfield, Maine-based Cianbro’s CEO, calls for establishing an energy trust authority to lease state-owned land and rights-of-way, particularly along Interstate 95, and more. The plan is backed by state legislative leaders, who are planning public hearings. Photo: Cianbro Maine fabrication yard produces refi nery modules for a record-breaking
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.