The parametric laboratory testing for column flotation conditions was completed with Elkhorn No. 3 Seam coal. Two of these study variables included the effects of frother type and feed particle size. Optimum results occurred with the use of a water-soluble polyglycol-type frother and a feed ground to 100 mesh x 0 size (89.3% yield, 0.70% product ash). The evaluation of the UCC modified air-dissolved unit was unsuccessful, in that no discernable separation (cleaning) took place during operation. The systematic investigation into the effects of coal-water slurry dispersants was initiated. Eight different dispersants were evaluated to determine the lowest viscosity at 1.00% concentration as per weight of dry coal. An anionic, ammonium salt of naphthalene sulfonate appeared to be the best. The effects of dispersant concentration were investigated using three different particle size consists. The optimum results are summarized as follows: (a) 75 Micron Top Size; 105 cps viscosity at 0.75% Dispersant Concentration; (b) 44 Micron Top Size; 160 cps viscosity at 0.80% Dispersant Concentration; (c) 20 Micron Top Size; 117 cps viscosity at 1.25% Dispersant Concentration.