The objective of this study is to verify a lumped-parameter model which was derived for predicting airborne dust concentrations at any location within a ventilated airspace using dust as a test dust. Average equilibrium airborne dust concentrations were predicted as a function of ventilation and dust generation rates. Time-dependent airborne dust concentrations at a designed location also were predicted from ventilation and dust generation rates.The model calculation solved as a 3-D lumped form of control volumes represented conservation of airflow rate. Swine dust used in this project has an average aerodynamic diameter of 2 um and 95% of the dust particles are less than 5 um in size while appoximately 45% of the particles are 2 um in diameter. Statistical analysis revealed that both ventilation rate and dust generation rate have a significant effect on airborne dust concentration.