Abstract: A method and apparatus is provided for attaching facing pieces to building structures in predetermined horizontal row and vertical tier arrangements. This method and apparatus is particularly well-suited for mounting removable marble face stones to crypt vaults in mausoleums. Anchor blocks are set in the structure in predetermined vertical and horizontal alignment positions and mounting bolts upon which the facing pieces hang are inserted into the anchor blocks. The mounting bolts are characterized by their ability to produce an eccentric motion which is used to cam the facing piece horizontally or vertically and thereby providing means for making small adjustments necessitated by the fact that the building structure and/or the face pieces have slightly irregular dimensions. Shims are used to make adjustments in the third dimension.