NOVELTY - Industrial feedstock comprises a mixture of wood particles having fibers aligned in a grain, where the wood particles are characterized by a length dimension (L) aligned substantially parallel to the grain, a width dimension (W) normal to L and aligned cross grain, and a height dimension (H) normal to W and L.    USE - The industrial feedstock is useful for pulp and paper production, manufacturing particleboard, and other industrial uses.    DETAILED DESCRIPTION - Industrial feedstock comprises a mixture of wood particles having fibers aligned in a grain, where: the wood particles are characterized by a length dimension (L) aligned substantially parallel to the grain, a width dimension (W) normal to L and aligned cross grain, and a height dimension (H) normal to W and L; the Lx H dimensions define two side surfaces characterized by substantially intact longitudinally arrayed fibers; the Wx H dimensions define two cross-grain end surfaces characterized individually as aligned either normal to the grain or oblique to the grain; the Lx W dimensions define two substantially parallel top and bottom surfaces; a majority of the Wx H surfaces in the mixture of wood particles have end checking; and the mixture of wood particles is a substantially uniform size distribution profile as determined by the following protocol comprising drying the wood particles (1000 g) to constant weight at 110 degrees F, pouring the dried wood particles (400 g) into a stacked screen assembly consisting of in a contiguous size-ordered array:a top 1-inch screen having 25 mm nominal sieve openings, a one half -inch screen having 12.50 mm nominal sieve openings, a 3/8-inch screen having 9.53 mm nominal sieve openings, a one quarter -inch screen having 6.30 mm nominal sieve openings, a No.4 screen having 4.74 mm nominal sieve openings, a No.8 screen having 2.38 mm nominal sieve openings, a No.10 screen having 2 mm nominal sieve openings, a No.16 screen having 1.19 mm nominal sieve openings, a No.20 screen having 0.84 mm nominal sieve openings, and a bottom pan, shaking the stacked screen assembly for 10 minutes on a motorized tapping sieve shaker, weighing the wood particles that are retained on each of the screens, and determining that the wood particle mixture is characterized by a substantially uniform size range if the sum of the weights of wood particles retained on any contiguous five of the screens exceeds 320 g in total.