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Uncontrolled water leakage into underground civil and industrial structures such as transportation stations, tunnels and mines can be one of the most annoying, difficult and costly problems faced by engineers and operators. Sovereign first pioneered high-pressure injection grouting with polymer-based emulsion (PBE) to seal water in deep underground mines and have over nearly five decades perfected use of the technology for shallower subsurface civil structures, such as those that form critical infrastructure in Singapore.
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