The melting (not sintering) point of sodium chloride is 801 0C.

Ironton Sintering Plant Complex was created in 1924.

Sintering welds the metal powder grains together without melting them completely. This produces a solid but porous piece of metal.

Sintering is a process where powdered carbide materials are heated below their melting point to create strong bonds between particles, resulting in a denser final product with improved mechanical properties. This technique is commonly used in the manufacturing of cutting tools, wear-resistant parts, and other high-performance applications.

There are several websites where an individual can obtain more information about laser sintering. Examples would include Wikipedia and the Free Dictionary.