Construction blocks and a method of making same

Abstract From the Canadian patent

Construction blocks for building retaining walls each block, comprising an upper and a lower face of generally rectangular shape, a plurality of sides, one of which comprises two projections of generally rectangular cross-section each located, adjacent one end of said side and extending generally perpendicular thereto. A method of making such blocks from a slab comprising at least two identical elements. The elements are defined by grooves, allowing but not necessitating breakage of the elements into separate blocks.