This invention discloses a method for mining a comment term in a document. The design eliminates the need for subsea pontoons extending between the surface-piercing columns. Inferences can be made based on information about organizations and services associated with structures and locations proximal to the locations where signals were lost. In addition, a cylinder head for the modification of existing engines to operate using this method is also provided. The resulting mass of the shear band is greatly reduced if using low density materials.