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Inkstick report: Building explodes at Northrop Grumman's Utah missile plant.

The explosion Wednesday is the latest in a history of workplace accidents, including injuries and deaths, at Northrop Grumman facilities in Utah. The plant's programs include the new Sentinel ICBM.

An explosion was reported at Northrop Grumman in Promontory, Utah, shortly after 7:30 a.m. on Wednesday, April 16, 2025. The following report was originally published by Inkstick , a nonprofit news platform. It is reprinted here with permission. An explosion destroyed a building at Northrop Grumman's Promontory missile and rocket plant in Utah's West Desert on Wednesday morning, according to a press release from the Box Elder County Sheriff's Office and an email sent to Northrop Grumman employees.

The email, shared with Inkstick, said that there was an “explosive incident” at the Promontory…

This is a 600 character excerpt. Read the full story at City Weekly, where it was published on April 16, 2025.

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