Close Graded Premix Surfacing/ Mixed Seal Surfacing 20mm thickness (Type B) Providing, laying and rolling of close-graded premix surfacing material of 20 mm thickness Type B consisting of crushed stone aggregates of specified grading premixed in a Continuous type hot mix plant with bituminous binder VG-10 @ 1.9kg per sqm, laying with Paver Finisher Mechanical and rolling with a Smooth wheeled roller 8-10 tonne capacity, and finishing to required level and grade complete as per technical clause 508 of MORT&H specifications