Colorado construction workers unearth a bomb from the WWII era.

A group of construction workers in Arapahoe County, Colorado, discovered a piece of history that prompted officials to investigate.

The Aurora Police requested the Arapahoe Sheriff's Department Bomb Squad to identify a metal device discovered on the scene.

A photo and the discovery made by the Arapahoe Sheriff's office were shared on X.

A construction company discovered a military ordnance in the 4600 block of S. Robertsdale Way, prompting the Arapahoe County Bomb Squad to investigate. The area was once the former Lowry Bombing and Gunnery Range, according to a post.

The CDPHE states that the 100-square-mile area, established in 1938, was used during World War II for military armament and bombing training, which included practice and high-explosive bombs.

From 1942 to 1963, the former Lowry Bombing and Gunnery Range was used for various training exercises involving inert and live munitions at multiple bombing and gunnery targets, as per the Omaha District, U.S. Army Corps of Engineers.

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An X-ray device was used by bomb technicians to determine the contents of the miniature bomb found on the scene, which was concluded to be inert cast-iron.

The Arapahoe Sheriff's office's post on X stated that they determined it was a World War II Mark 23 Mod 1 training round.

The four former Titan I missile complexes at the former Lowry Bombing and Gunnery Range were operational from 1962 to 1965.

According to the U.S. Army Corps of Engineers, cast-iron miniature bombs were frequently employed as training tools for land target practice.

Officials turned the device over to the Buckley Space Force Base in Aurora.

Munition safety tips from the CDPHE

"Training and practice munitions may also be hazardous."

"Always be cautious when handling items labeled as 'training' or 'practice,' as they may still be dangerous."

"Military munitions were created to annihilate military resources and inflict harm on individuals."

"Despite their age, munition items remain hazardous and dangerous."

"Trained experts should handle munitions and assess the item to make the area safe."

The Arapahoe Sheriff's office was contacted by Planet Chronicle Digital for further comment.