Air pollution in a chemical fertilizer complex in Nigeria: The impact on the health of the workers Dr Godson R.E.E. Ana, PhD, MPH, M.Eng, BSc, MRSPH, MIFEH, MAPHA; Professor Mynepalli K.C. Sridhar, PhD, MSc, BSc, FRSH, MCIWEM, C.Chem. & Dr Joshua F. Olawuyi, PhD, MSc, BSc, MIS, MIEH, FSS.