Strand, cable bolt and its installation

A method of fabricating a strand with improved corrosion resistance and a reliable anchorage, comprising the steps of:

• (a) preparing a plurality of outer metallic elongated members;
• (b) coating a surface of the outer metallic elongated members with a corrosion resistant layer having a thickness in a range of 10 g/m2 to 200 g/m2;
• (c) cold working the coated outer metallic elongated members to their final dimensions;
• (d) deforming the surface of the coated outer metallic elongated members to form indentations having a depth in a range of 80 μm to 130 μm;
• and
• (e) arranging the coated outer metallic elongated members and twisting them together with a central metallic elongated member,
• wherein step (b) and step (c) are performed prior to step (d) such that a profile of the corrosion resistant layer is conformal to a profile of the indentations, and the central metallic elongated member is a smooth round wire, and
• wherein the strand forms a cable bolt configured to be inserted in a borehole of a mine roof.