Exhibit 21.1 LIST OF AFFILIATED COMPANIES Company Name State of Inc. ------------ ------------- American Transinsurance Group, Inc. Delaware ATG Reinsurance Ltd. Turks & Caicos Island Bulknet.com, Inc. Pennsylvania Capacity Management Systems, Inc. Pennsylvania Chemical Leaman Corporation Pennsylvania Chemical Leaman Tank Lines, Inc. Delaware Chemical Properties, Inc. Pennsylvania CLM, Inc. Delaware CLT Services, Inc. Delaware CLTL of Nevada Nevada EnviroPower, Inc. Delaware Fleet Transport Company, Inc. Delaware Lakeshore Leasing, Inc. Indiana Levy Transport Ltd./Levy Transport, LTEE Canada LLI, Inc. Delaware Mexico Investments, Inc. Florida MTL De Mexico S.A. de C.V. Mexico MTL Investments, Inc. Canada M T L of Nevada Nevada Pickering Way Funding, Inc. Delaware Power Purchasing, Inc. Delaware QSI Services, Inc. Delaware Quala Systems, Inc. Delaware Quality Carriers, Inc. Illinois Transplastics, Inc. Delaware