PROMONTORY, Box Elder County — No solid rocket motors were lost or damaged in an explosion Wednesday in remote Promontory, a company spokesperson for Northrop Grumman told KSL.com Friday.

SALT LAKE CITY (KUTV) — Governor Spencer Cox said ... “There was an incident in one building at our Promontory, Utah facility this morning and we are working to determine the cause,” read ...

Utah's capital city is on the verge of growing its boundary after the Jordan River created an unexpected hurdle in a process years in the making.