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Both sides met Thursday with aid of federal mediator and negotiations are expected to continue on Friday.
Draymen say they could be forced out of business by huge demurrage and detention bills.
West Coast port union and management continue publicity war.
Top executives described initiatives to improve flow of cargo off docks at the nation's two largest ports during the TPM conference in Long Beach.
Vote ended a two-month skirmish over Obama immigration policy and spared agencies like CBP from cutbacks.
Environmental advantages of liquid natural gas remain undisputed despite a lack of profitability, according to the commission.