After the cargo was moved to a warehouse at the port, it sat there for years. This episode connects the dots to understand why the chemical, commonly used in fertilisers and explosives, was neglected for so long. We hear from officials and workers at the port, and we try to establish who knew about the ammonium nitrate all this time, and whose responsibility it was to make sure it was safe.

This episode is the second of a four-part investigation into the 2020 Beirut port explosion that follows events before, during and after the incident.

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