Union-led work slowdowns could halt the 29 U.S. West Coast ports in 5 to 10 days, the head of the shippers’ association said, urging the union to accept a new offer that includes 3 percent raises. Backups and delays at many of the ports are causing uncertainty in the agriculture export industry, manufacturers and consumers as the flow of goods approaches a “coast-wide meltdown.” Read more at AgWeb…