June 6, 2012 Occidental Petroleum (NYSE:OXY) Publishes 2011 Social Responsibility Report Occidental Petroleum Corporation (OXY)
May 23, 2011 Occidental Petroleum (NYSE:OXY) Publishes 2010 Social Responsibility Report Occidental Petroleum Corporation (OXY)
May 21, 2010 Occidental Petroleum Corporation (NYSE:OXY) publishes Social Responsibility Report 2009 Occidental Petroleum Corporation (OXY)
