Chemical In Beirut Explosion Common In U.S., Public Reporting Isn't

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Chemical In Beirut Explosion Common In U.S., Public Reporting Isn't
The U.S. has spotty public disclosure of the same chemical that Beirut leaders say caused the massive deadly blast there.
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The Department of Homeland Security tracks where ammonium nitrate is stored in the U.S., but only certified people can get access to that information, and facilities holding it can avoid public disclosure if they use an EPA loophole.