What goes in and out of Baltimore's port?

CCBC Director of Transportation, Distribution and Maritime Logistics Kipp Snow was quoted in an article regarding goods going in and out of the Port.

From Politico Pro, by Francisco "A.J." Camacho

Baltimore is the nearest deep-water port to the nation’s capital and the largest port of entry for several goods, and experts are unsure how the closure of traffic will affect the region.