12 CONSTRUCTION MATERIAL, AND MORE SPECIFICALLY HARDBOARD PANELS FOR VARIOUS CONSTRUCTION PURPOSES SUCH AS COUNTER TOPS, SPINNING CHUCKS FOR METALS, FLOORING, NEUTRON SHIELDING, JIGS, FIXTURES, TEMPLATES, VACUUM FORMING DIES, MATCH PLATES IN FOUNDRIES, X-RAY TABLE TOPS, WALL HARDBOARD PANELS REQUIRING HIGH DENSITY MATERIAL, WEAR SURFACES FOR MACHINERY, AND THE LIKE