If you use assistive technology (such as a screen reader) and need a
version of this document in a more accessible format, please email firstname.lastname@example.org.
Please tell us what format you need. It will help us if you say what assistive technology you use.
Guidance on the use of coring and vacuum extraction (core and vac) for repairing buried equipment. The technique allows companies to open the road, repair the buried equipment and reinstate the site much faster than conventional excavation methods.