The minister has also instructed officials to check on the handling of explosive materials and chemicals at nine factories that produce matches and fireworks.
The minister expects a report on all this within 48 hours.
Ammonium nitrate is normally used in the production of matches, fireworks and explosives, as well as for the production of pesticide and animal-related products.
It is believed that improperly stored ammonium nitrate was behind the explosion in Beirut, which killed at least 137 and injured thousands.