Coring is a specialized pavement-removal process allowing Miller Pipeline crews to cut and remove a clean, intact section of concrete or asphalt covering a utility. Holes can range from 4-inches for spot-hole purposes, and up to 18-inches for full maintenance operations. The cored section is set aside during excavation. After the task is performed, the hole is backfilled with excavated material or material of choice (bagged flowable fill, sand, stone, etc.) and the core is reinstated. It is set using non-shrinking grout, returning the original look and structural integrity of the entire area. Coring is minimally disruptive; it allows access to underground pipelines without damaging the integrity of the road base in close proximity to the excavation. Miller crews are able to reinstate the pavement or sidewalk, eliminating the need to pour new concrete, use plates or barricades or hire a paving contractor.