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• A 40-foot shipping container exploded at the Port of Los Angeles at 5:58 p.m. on Tuesday inside the Evergreen Terminal when a combustible substance ignited, according to a statement from the port. The port was evacuated and there were no injuries.
cleared as safe. 

• The container in question came to the port from a nearby recycling facility with 11 other containers bound for Taiwan, all of which have been cleared as safe. 

• "The involved container was not marked as containing hazardous materials and the manifest indicated clean scrap iron or heavy melting scrap only," read the statement. The investigation is ongoing.

Fires are fairly common in recycling facilities like the one where the exploded container originated.

In fact, Port Saint John in Florida experienced a similar explosion earlier this year. In September, the American Iron and Metal recycling facility, based in the west side of the port, "experienced a significant explosion" early in the morning, according to a port statement. The facility quickly identified the source, took action to notify its supplier, and pledged more stringent monitoring and to use technology to help avoid future incidents. 

In 2017, waste facilities in the U.S. and Canada reported 289 fires. Global warming, the increase in lithium-ion batteries and China's import restrictions are factors that have lead to a rise in such fires, according to Waste Dive. But the combustibles that cause these fires don't often cause similar catastrophes at ports. 

Federal regulation has focused on the threat of explosives and harmful substances being sent to U.S. Ports intentionally for outside and efforts to scan containers for dangerous content, but Business Insider reports it still very unevenly applied through U.S. Ports, as security checks tend to monitor inbound and not outgoing cargo. 

"Procedures at the recycling facility will be reviewed by the Los Angeles Port Police, and the US Coast Guard will review their Facility Security Plan for which they have jurisdiction," the Port of Los Angeles said in its statement.