Hazardous Materials Management System Practice Test

The key idea is that blasting agents are formed by pairing an oxidizer with a fuel. Ammonium nitrate serves as a common oxidizer, and when it is combined with a hydrocarbon fuel, the result is a blasting agent known as ANFO (ammonium nitrate fuel oil). This combination is widely used because it’s inexpensive and stable to handle in bulk. Amatol, on the other hand, is a historical blend of ammonium nitrate with TNT as the fuel, not with fuel oil. TNT, RDX, and PETN are different explosives with their own separate formulations and purposes; they do not represent the ammonium nitrate–fuel oil pairing. So, the statement describing a mixture of ammonium nitrate and fuel oil points to ANFO, which isn’t listed among the options. The closest historical analogue, Amatol, uses TNT as the fuel instead of fuel oil.