In 2005 , the two Idaho - based laboratories merged to become the Idaho National Laboratory .
Argonne formerly ran a smaller facility called Argonne National Laboratory - West ( or simply Argonne - West ) in Idaho next to the Idaho National Engineering and Environmental Laboratory .
In 2005 , the two Idaho - based laboratories merged to become the Idaho National Engineering and Environmental Laboratory     .
Argonne formerly ran a smaller facility called Argonne National Laboratory - West ( or simply Argonne - West ) in Idaho next to the Idaho National Engineering and Environmental Laboratory .