Abstract: A pick arm anchor assembly for use as a rock or mine roof bolt hole anchor characterized by an arrangement of components into an assembly which can be either used in conjunction with conventional expansion type rock anchors or it can be used independently with a mine roof bolt (without the expansion type anchor) to reinforce tunnel rock strata or mine roof strata. For a given hole diameter the assembly provides deeper penetration of the rock strata than conventional anchors. It also uses a greater concentration of transverse thrust in a small area to overcome rock stress resistance, to aid in penetration of the rock strata of a bolt hole. By deeper penetration of the rock strata of the bolt hole, the rock stress resistance to longitudinal forces is utilized in addition to the rock stress resistance to transverse forces employed in conventional expansion shell type anchors.