On October 24 ("Black Thursday"), the market lost 11% of its value at the opening bell on very heavy trading. Several leading Wall Street bankers met to find a solution to the panic and chaos on the trading floor.[11] The meeting included Thomas W. Lamont, acting head of Morgan Bank; Albert Wiggin, head of the Chase National Bank; and Charles E. Mitchell, president of the National City Bank of New York. They chose Richard Whitney, vice president of the Exchange, to act on their behalf.