A CT bolt is a type of anchor used in underground mining to ensure the stability of rocks and prevent the collapse of galleries and tunnels.
This type of bolt consists of a steel bar with a head at one end and an anchoring device at the other. The anchor device consists of a plate and bulb that expands when tension is applied to the rod, anchoring the bolt to the surrounding rock.
CT bolts are used in a variety of underground mining projects, especially where rock conditions are unstable or higher strength is required. These can be projects for the extraction of minerals such as gold, silver or copper, or tunneling projects for the transport of materials or the construction of infrastructure such as dams and bridges.