Tribal Organization: Standing Rock Sioux Tribe of North and South Dakota
27903 Highway 12
Mobridge, South Dakota 57601
(800) 475-3321
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Winners must claim prizes within two (2) minutes or prizes will be forfeited and another name will be drawn. Grand River employees are not eligible to participate in promotions. Grand River reserves the right to modify or cancel any promotion and use all photos in future publications and for advertising purposes.
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Open Hours:
- Mon: 12am-12am
- Tue: 12am-12am
- Wed: 12am-12am
- Thu: 12am-12am
- Fri: 12am-12am
- Sat: 12am-12am
- Sun: 12am-12am