1. Rock anchors are long bolts or cables with one end grouted into a drill hole and with a plate and nut on the exposed end. These can carry considerable loads, although slow failure of the rock will lessen the support.
2. Soil anchors may be used in sediments where the material is strong enough to provide sufficient reaction to the load. Holes must be drilled and the anchor installed and grouted quickly, as soil around the hole may crumble and reduce the strength of the bond.