A new study by the US Maritime Commission on the problems with lock outages in our inland river waterways. If we don’t maintain the locks, we lose competitive advantage in agricultural products particularly; for instance costs of exporting soybeans goes up and lets Brazil become the cheapest source.
I’ve included a link to the pdf of the study below.
via NWF, MarAd release study on unscheduled lock outages
BY HAILEY DESORMEAUX |THURSDAY, NOVEMBER 02, 2017
PDF of study:
Supply Chain and Logistics 
Is this really reliable
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