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The truck drivers are targeting four companies for now, but may expand the strike, according to Teamsters spokeswoman Barb Maynard.
Nebraska Sen. Deb Fischer says labor impasse sent "ripples through the U.S. economy."
Schnitzer Steel and Bed Bath & Beyond say the labor slowdown and resulting port congestion hurt business.
The $100 million deal consolidates two large drayage companies.
Announced on the heels of a port driver labor strike, Eco Flow will use "free-flow" to move containers out of terminals to off-dock yards.
The stevedoring and ocean freight company's new vessel Marjorie C can carry both containers and roll-on/roll-off cargo.