SOVEREIGN INTERNATIONAL, INC

Sovereign International, Inc. is a privately-held, water-sealing company specializing in the manufacture and application of patented polymer grouts. Sovereign formulated its first grout in 1972 for control of high flow-high pressure water ingress into deep subsurface mines in South Africa. Since that time, Sovereign has developed several proprietary grouts, and our expertise and products are in demand world-wide. Over the past 4 decades, Sovereign has successfully sealed leaking mines and shafts in 37 countries, and has diversified application of its patented grouts beyond mining into the civil, tunneling, well leak mitigation, compressed air energy storage (CAES) and nuclear groundwater containment arenas.