Ammonium nitrate is a chemical compound with the chemical formula NH₄NO_3. It is a white crystalline salt consisting of ions of ammonium and nitrate. It is predominantly used in agriculture as a high-nitrogen fertilizer.

Its other major use is as a component of explosive mixtures used in mining, quarrying, and civil construction.

Urea is one of the most widely used nitrogen fertilizers in the world, accounting for more than half of global nitrogen fertilizer production. It is highly soluble and can be applied to the soil or used as a foliar spray. Urea provides a quick release of nitrogen, making it an ideal choice for crops that require a boost of nutrients early in the growing season, such as corn, wheat, and rice.

Leonardite is a soft waxy, black or brown, shiny, vitreous mineraloid that is easily soluble in alkaline solutions. It is a rich source of humic acid (up to 90%) and is used as a soil conditioner, as a stabilizer for ion-exchange resins in water treatment, in the remediation of polluted environments and as a drilling additive. It was named after A.G.Leonard first director of the North Dakota Geological Survey, in recognition of his work on these deposit.