Panama Canal

GUPC — which includes Sacyr Vallehermoso (Spain), Salini Impregilo (Italy), Jan del Nul Group (Belgium) and Constructora Urbana (Panama) — walked off the job for two weeks in February after several weeks of negotiations failed.

Arbitration of the first claim in a $1.6 billion dispute over cost overruns in the expansion of the Panama Canal gets under way Monday.

It will start with a teleconference to determine procedures, both sides’ positions and a timeline. Then the impasse will be arbitrated by an international tribunal seated in Miami, said Carolyn Lamm, an attorney who is representing the Spanish-led consortium that temporarily halted work on the canal earlier this year.

The money dispute pits the Panama Canal Authority, which oversees operations of the 50-mile-long canal, against Grupos Unidos por el Canal, a consortium of international construction companies that is the main contractor on the $5.25 billion expansion.

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