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- Sewage and water purification plants
- Drinking-water plants
- All types of work for waterboards and canal authorities, including removal of fallen trees and other objects
- Concreting, cutting, welding, jetting, air and pumplifting, dredging and digging
- Fixing of shuttering and scaffolding
- Sealing of leakages
- Installation of underwater constructions
- Repair of bridges and piles
- Drilling, cutting of steel and concrete
- Pumping operations.
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