Northrop Grumman building apart of facility making ballistic missile parts destroyed by a large explosion.

By. Scott Jackson

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04/17/20225

On wendsday morning, April 16, in Promontory, Utah, authorities are investigating a large explosion that destroyed a building that was apart of the Northrop Grumman Innovation Systems facility involved in building rocket motors.

Local police received the report of the explosion at 7:38am. Soon after they asked that people stay clear and evacuate the area if necessary as the fire was still going.

“There was an incident in one building at our Promontory, Utah facility this morning and we are working to determine the cause. Employees working in or near the building today are accounted for and there are no significant injuries reported,”

-a statement from Northrop Grumman.

Before being squired by Northrop Grumman in 2018 the facility was owned by a company called Orbital ATK. The facility specializes in making solid rocket motors for the military as well as NASA and other commercial aerospace companies. This facility is making the Sentinel intercontinental ballistic missile (ICBM) stage-one solid rocket motor.

The Sentinel ICBM program will eventually field 400 missiles in silos and 259 additional units for testing and demonstration. Northrop Grumman is the largest SRM production company in America and one of the o my companies. The only other major company The only other major SRM producer in the United States is Aerojet Rocketdyne, which became part of L3Harris in 2023

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