1. Baroid Drilling Fluids PO Box 2388, Williston, ND 58802 Coordinate: 48.148335,-103.621666 Phone: (701) 572-4515
2. Cor-Pro Chemical 4102 2nd Ave W, Williston, ND 58801 Coordinate: 48.18255,-103.62503 Phone: (701) 572-7355