Wind tunnel experiments were conducted to investigate size-specific particle concentrations in the near-wake of an elliptical cylinder. The cylinder, 0.86 m tall with major and minor axes of 0.17m and 0.097 m respectively, served as a human surrogate. The freestream velocity (1.2 m/s) was perpendicular to the major axis resulting in a Reynolds number of approximately 13,600, representative of a typical occupational setting. An ultrasonic atomizer was placed downstream of the cylinder, inside the wake, to generate a poly-disperse liquid aerosol. Cascade impactors were used to determine the atomizer mass generation rate and aerosol concentrations for 6.3 - 9.7μm oil particles. The mass generation rate was 7.2μg/s for this size range, representing 67.2% of the oil particles by mass in the respirable size range. Particle concentrations were measured at three locations in the near-wake of the cylinder to represent the breathing, elbow, and hip regions. The concentrations were expressed as dimensionless numbers relating concentration to the atomizer mass generation rate(m[subscript]o), the height(H) and breadth(D) of the cylinder, and the freestream velocity(U). The dimensionless concentrations were 6.7, 65.5, and 4.3 for the breathing, elbow, and hip regions, respectively. The dimensionless concentrations for the breathing zone and hip region showed good agreement with sulfur hexafluoride(SF[subscript]6) tracer gas concentrations measured within the near-wake of an anthropometric mannequin, as expected for small particles. However, higher particle concentrations in the elbow region were identified and attributed to the geometric differences between the cylinder and bent mannequin elbows. For a worker facing downstream, a dimensionless breathing zone concentration of 7.0 is a reasonable estimate for respirable aerosols generated in the wake. An industrial hygienist can use this dimensionless concentration to estimate a worker's exposure once the worker's height and chest breadth, freestream velocity, and contaminant mass generation rate are known. Therefore, the primary significance of the work is to extend a simple model of human exposure to aerosols and to provide a simple estimator for assessment and control studies.