Patch Work with Close Graded Premix Surfacing/ Mixed Seal Surfacing 20mm thickness (Type B) Providing and laying patch work with close-graded premix surfacing material of 20 mm thickness Type B using penetration grade bitumen VG-30 @ 1.9kg per sqm and crushed stone aggregates of specified grading after trimming the pot hole, removal of failed material, including mixing in a Continuous type hot mix plant, carriage of mixed material to site of work, laying by suitable means and rolling with a smooth wheeled roller to match the adjoining surface complete as per technical clause 508 of MORT&H specifications