Redmond natural trace mineral salt has been used for all classes of livestock for more than 40 years.

Natural Trace Mineral Salt (NTM) is rock salt. Natural rock salt mined from an open pit deposit near Redmond, Utah. While NTM Salt is mostly pure salt, (95% pure sodium chloride) it also contains many valuable trace minerals...Natural Trace minerals that all livestock need: Calcium, Potassium, Magnesium, Sulphur, Zinc, Copper, Iodine, Iron, Phosphorus, and Manganese. These valuable minerals are all essential to the proper growth and development of your livestock.

Salt is crushed and screened.

Size #4 (medium): goes through a 4-mesh screen, it is approximately 1/8 of an inch, it is like kernels of wheat.