HomeLocationsGlobalNelson Mandela Nelson Mandela risknowlogy 2013-12-07 Tweet Pin It Nelson Mandela 1918 – 2013 Never give up. Keep pursuing what you believe in most. Related Posts Siemens SITRANS P500 SIL 2 certified Safety Leadership – Who Is Responsible? You Are … Risknowlogy Launches SIL Training Course for Developers of Mechanical Devices