Abstract: Composition board and various other synthetic or artificial panel and the like structures a well as manually-formable compositions of paste-like consistency for substitution as putty, caulking or molding clays, etc., all of which can be internally reinforced for better-strength structural purposes, are fabricated and made into desired strong and excellently-utile shaped article products of manufacture and the like under various forming conditions for the purpose from coarse paper starting material (viz, common "newsprint", kraft paper, cardboards, etc.) which starting material may optionally have "wet" sawdust and/or other undried cellulosic inclusions therein all of which, advantageously and economically, is converted by treatment thereof with certain non-azotizing, non-alklai, nascently-operative and -reacting strong oxidizing agents including such things as common household bleach (i.e.