The explosion happened about 1 p.m. Tuesday in a mixing building at the plant. The four injured employees were evaluated at the scene and refused further treatment, according to a release from the U.S. Army’s Joint Munitions Command, The Kansas City Star reported.

The explosion occurred in a primer mixing cell. Officials were continuing to investigate the explosion.

Officials have secured the scene, and the Bureau of Alcohol, Tobacco, Firearms and Explosives has rendered the area safe so that a cause of the explosion can be determined.

The plant will remain closed for the remainder of the day. Employees were asked to call their building hotline number before returning to work Wednesday.

Lake City Army Ammunition Plant provides quality small-caliber munitions and operates the North Atlantic Treaty Organization (NATO) test center. It sits on 3,935 acres in Independence.

Check out the video report via FOX 5 Vegas:

FOX5 Vegas – KVVU

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