EXHIBIT 21.1 LIST OF SIGNIFICANT SUBSIDIARIES OF MTL INC. NAME OF SUBSIDIARY STATE OF INCORPORATION PERCENTAGE OWNED ------------------ ---------------------- ---------------- 1. Montgomery Tank Lines, Inc. Illinois 100% 2. Quality Carriers, Inc. Virginia 100% 3. Lakeshore Leasing, Inc. Indiana 100% 4. Mexico Investments, Inc. Florida 100% 5. MTL of Nevada Nevada 100% 6. Chemical Leaman Corporation Pennsylvania 100% 7. Chemical Properties, Inc. Pennsylvania 100% 8. Capacity Management Systems, Inc. Pennsylvania 100% 9. Core Logistics Management, Inc. Delaware 100% 10. EnviroPower, Inc. Delaware 100% 11. Pickering Way Funding Corp. Delaware 100% 12. Power Purchasing, Inc. Delaware 100% 13. American Transinsurance Group, Inc. Delaware 100% 14. Chemical Leaman Tank Lines, Inc. Delaware 100% 15. Fleet Transport Company, Inc. Delaware 100% 16. Quala Systems, Inc. Delaware 100% 17. CLT Services, Inc. Delaware 100% 18. Leaman Logistics, Inc. Delaware 100% 19. Transplastics, Inc. Delaware 100% 20. QSI Services, Inc. Delaware 100% 21. Levy Transport Ltd. Quebec, Canada 100% Additionally, MTL Inc. has a 1% ownership interest in MTL de Mexico, S.A. de C.V., a Mexican corporation. Mexico Investments, Inc., a wholly owned subsidiary of MTL Inc. owns the remaining 99% interest in MTL de Mexico.