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Move comes as ILWU, PMA talks enter 10th month.
PMA neither loaded nor unloaded ships over the weekend, leaving yard and gate operations up to individual terminals.
Union disputes claims that West Coast container docks are too congested to unload ships at night.
Sales, hiring and capital expenditures are expected to rise, according to a Business Roundtable survey.
Congressional watchdog agency told Senate lawmakers that FMCSA should enhance its Safety Measurement System for motor carriers.
Containers in stack at Centerm contained trichloroisocyanuric acid, according to the terminal operator.