Edgemont, South Dakota system wide seniority?

Is Edgemont, SD in the main seniority system?

Or, what seniority district is Edgemont in? (system wide or what)

Thanks in advance

Edgemont, SD is in the BNSF Wyoming Seriority District (part of the origional CB&Q system of seniority districts). Last I knew (L/2002) a person in engine service could transfer to another seniority district but would not be able to take his or her seniority with them.