Metallurgical coal is also known as Met coal or Coking Coal. Metallurgical coal (Met/Coking) is used to supplies the heat and carbon in the steel mill process to make steel products. From the higher temperatures created from Met Coal in the coking process, the coke will be created, and the coke gives the steel its strength and flexibility. Metallurgical coal (Met/Coking) can be used in the building of bridges, buildings, or anything that steel is used in.