The WSJ has the story: Port of Oakland Reports Record Container Volumes in July--Movement of empty TEUs sparks upsurge
"The Port of Oakland, Calif., reported record container volumes in July, driven by a surge in empty containers on both the export and import side.
Dockworkers handled nearly 30% more empty containers—48,521 20-foot equivalent units for export and 17,017 import TEUs—in July. Empty containers are usually moved, in anticipation of trade growth, to places where they’re expected to be filled with goods before shipping back.
“With holiday shipments set to commence, this could be the start of something good,” said the port’s maritime director, John Driscoll.
Oakland is a major hub for U.S. agricultural exports other shipments destined for Asian markets.
Officials said July was the port’s busiest month in 10 years. During the month of July, the port received 153 visits from container ships, up from 136 during the same period in 2015."