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Employers "hopeful that this will allow us to move toward conclusion of an agreement in the near term."
Move comes as ILWU, PMA talks enter 10th month.
Acquisition would make Japan Post one of the largest global 3PLs.
Experimental off dock drop yard at the Port of Los Angeles could help speed containers.
The International Association of Classifications Societies said it would continue to study the report and the will finalized the requirements soon.
The federal agency alleges shipments did not include relevant documents and were improperly packaged and labeled.