Nov 26, 2015 · Chromite, the mineral ore that contains chromium (Cr), is mined in South Africa. 26 Chronic inhalation of Cr(VI) in humans results in shortness of breath, coughing, wheezing, perforations and ulcerations of the nasal septum, bronchitis, decreased pulmonary function, pneumonia, asthma and nasal itching and soreness. 46 –48 In addition, hexavalent Cr is a strong oxidizing agent that is also