Abstract: A loading apparatus includes a loading tube with an input end and an output end, the input end positioned between three and six feet above a surface, the output end positioned between six and twenty feet above the surface. The surface is sufficiently strong to support a concrete mixer. The loading tube further comprises at least one nozzle positioned at the loading tube between the input end and the output end, the nozzle disposed so that air passing through the nozzle into the loading tube flows toward the output end. A valve is connected with the at least one nozzle, disposed to permit and deny air flow through the valve to the at least one nozzle. To use the apparatus, the loading tube and a concrete mixer are positioned so that the fill opening of the mixer is below the output end. Air is caused to flow through the at least one nozzle. A predetermined number of water-soluble bags of material are counted, and the bags are placed, one by one, into the input end of the tube.