EXHIBIT 10.4 SECOND AMENDED AND RESTATED LIQUIDITY UNDERTAKING This Second Amended and Restated Liquidity Undertaking (this "Agreement"), dated effective as of January 31, 1997, is executed and delivered by NL INDUSTRIES, INC., a New Jersey...Liquidity Undertaking • March 21st, 1997 • Nl Industries Inc • Industrial inorganic chemicals • New York
