NOVELTY - Water moisture content reduction method-I for petroleum coke or coal, comprises: (a) providing mixed alcohols comprising 0.01-55 vol.% of methanol, 0.01-80 vol.% of ethanol, 0.01-35 vol.% of propanol, 0.01-30 vol.% of butanol and 0.01-20 vol.% of pentanol; (b) mixing the mixed alcohols with the coke or coal, where the coke or coal contains water, with at least some of the water mixing with the mixed alcohols; and (c) removing a portion of the mixed alcohols from the coke or coal, where the water moisture content of the coke or coal is reduced.    USE - The water moisture content reduced petroleum coke or coal is useful in internal combustion engines, furnaces, boilers and gasifiers, and for electrical production or any gas-to-liquids (GTL) process for fuel production.    ADVANTAGE - The method is capable of energy-efficiently reducing water moisture content of petroleum coke or coal, and transporting solid petroleum coke or coal through e.g. a pipeline in a cost-effective manner. The solid petroleum coke or coal has improved thermal value, and exhibits good combustion properties and reduced harmful combustion emissions.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for:    (1) a transportation method-II for coke or coal, comprising the step (a) as above per se, (a1) mixing the mixed alcohols with the coke or coal to form a thixotropic slurry, and (b1) transporting the slurry in a pipeline, barge, tanker truck, ship tanker or rail tanker;    (2) a transportation method-III for heavy crude oil or bitumen, comprising the step (a) as above per se, (a2) blending the mixed alcohols with the heavy crude oil or bitumen to form a thixotropic slurry, and (b2) transporting the slurry in a pipeline, barge, tanker truck, ship tanker or rail tanker; and    (3) a transportation method-IV for biomass, comprising the step (a) as above per se, (a3) mixing the mixed alcohols with the biomass to a slurry, and (b3) transporting the slurry in a pipeline, barge, tanker truck, ship tanker or rail tanker.