"HHE Report No. HETA-91-261-2245, Metropolitan Sewer District, Mill Creek Facility, Cincinnati, Ohio"@en . . . . . . . . . "1992-08-01T00:00:00Z"^^ . . . . . "HHE Report No. HETA-91-261-2245, Metropolitan Sewer District, Mill Creek Facility, Cincinnati, Ohio"@en . . "HHE Report No. HETA-91-261-2245, Metropolitan Sewer District, Mill Creek Facility, Cincinnati, Ohio"@en . . . . . "00210237" . . . . . . . . . "HHE Report No. HETA-91-261-2245, Metropolitan Sewer District, Mill Creek Facility, Cincinnati, Ohio"@en . . . "PB93118677" . . . . "10.26616/NIOSHHETA912612245" . "Esswein-EJ" . . . . "Burton-NC" . . . . . . . . . . "field study published in 1992"@en . .