Stone and soil
Underwater gravel extraction
The gravel extraction industry is faced with increasing challenges: whilst many mining sites are becoming more and more difficult to access, the demand for gravel as an important component of construction materials continues to grow.
METZEN Industries’ KRÖGER grabs have been established in all rivers and lakes where dredgers or rope excavators are used for gravel and sand extraction for decades and are in use at countless locations across Europe.
Thanks to our low-maintenance underwater motor and rope grabs, you can extract gravel and sand in new locations whilst complying with environmental regulations and increasing your profitability. Our grabs are particularly suitable for use on difficult terrain and at extreme depths.