On November 23 in the year 1877 there a very tragic accident took place in a brewery in the town of Geraardsbergen in the province of East-Flanders. One of the workers was cleaning a large vat that had been used or making old beer. Suddenly, he was overwhelmed by the vapours emanating from the yeast on the bottom of the vat, and he about to suffocate. Brewer Emile Vande Maele quickly jumped into the vat to save his unfortunate employee. The other workers tried to stop him, but it was too late. Vande Maele too couldn’t get air and choked. From everywhere people rushed forward to help, but there was so much carbon dioxide in the air that even the lamps held above the vat extinguished several times. In the end, the vat had to be chopped into pieces to get the bodies out.