The D-Bolt is a new generation energy-absorbent element for rock reinforcement.

The product is a novel ductile rock bolt for efficient and reliable rock reinforcement in squeezing and burst-prone strata. The patent pending technology is developed by Professor Charlie C. Li at the Norwegian University of Science and Technology (NTNU).

To find out more, please go to the D-Bolt section.

We have also invented a new face plate that also absorbs more energy without destroying mesh or shotcrete. More information will be posted soon.

Click the image below to watch a demonstration of the D-Bolt in use: