Cleaning the Taj Mahal (IMAGE) Georgia Institute of Technology Caption Workers clean a portion of the Taj Mahal complex. Marble on the right shows brownish discoloration caused by particles of carbon, and dust. Credit Credit: Mike Bergin Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.