Are US Ports Safer Than Beirut in Handling Dangerous Cargo?

Chemical explosion at the port of Beirut and killed more than 100.
In 1947, cargo in the hold of the freighter Grandcamp started smoking.
The powerful blast destroyed ships, docks, and an adjoining Monsanto chemical plant.
Potentially explosive cargo may be petroleum, liquified natural gas, and chemicals.
Officials in two of the nation’s busiest ports said safety is always the top priority.
Any cargo considered dangerous is subject to Coast Guard inspection.

According to an article published...