“Keyholing” is the process of making a small, precisely controlled hole to access buried utilities, for locating purposes, for inspection, or to use specialized tools to perform any of several repair, maintenance, or installation tasks.

Keyhole technology provides a time-saving alternative to common excavation and restoration methods, which often require large “open” excavations, followed by the removal and disposal of unwanted pavements and soils. These conventional practices – usually performed using several large pieces of equipment (backhoes, dump trucks, pavement breakers, etc.) – can account for a significant amount o f time and labor relating to a repair job.