A simple mechanistic model for resuspension assuming a log-normal distribution of adhesive forces is used to analyse the resuspension measurements of a series of experiments reported in the literature covering a range of particle size from sub-micron to 30 mum in both mono-layer and multi-layer deposits. Correlations are derived for the geometric mean and spread of the adhesive force as a function of particle size. These show that adhesion is much less than that for smooth contact between particle and surface, consistent with the effect of surface roughness. Furthermore, sub-micron particles in a bed of particles appear to be more tightly bound with a much reduced spread than when the coverage of particles is less than a mono-layer. The model including these correlations is easily implementable and suitable for incorporation into severe nuclear accident codes and industrial gas/particle codes.