VPDD are experts in forward reaming, back reaming and air hammer hole opening.

VPDD uses its own high-pressure grout pumps. These pumps handle micro-fine mixes as well as normal Portland cement mixes. Used with our high-sheer mixers, non-interrupted continuous mixing and delivery can be sustained for long periods of time. Also loss control media such as oats or cellophane pass harmlessly through all valves and ports. VPDD utilizes chemical grouts, non shrinking grouts and an array of grout additives. Our typical jobs include Mine shaft leak repairs, hole abandonment , cement head frame repairs, cable grouting, dam structural stress relief,  dam spillway grouting for pre membrane installation and other high inflow situations in underground mining and dam settings.