EXHIBIT 21 ROBERTSON-CECO CORPORATION SUBSIDIARIES OF THE REGISTRANT DECEMBER 31, 1993 - - -------------------------------------------------------------------------------- JURISDICTION COMPANY OF INCORPORATION - - -------------------------------------------------------------------------------- Subsidiaries of the registrant included in the respective consolidated financial statements: DOMESTIC Ceco Dallas Co. Texas Ceco Houston Co. Texas Ceco San Antonio Co. Texas Craw Manufacturing Co. Delaware RHH Industries, Inc. Delaware Quantum Constructors, Inc. Delaware M C Durham Co. North Carolina M C Windsor Co. Arkansas Meyerland Co. Colorado RC Industries Delaware RPM Erectors, Inc. California FOREIGN H. H. Robertson, Inc. Ontario H. H. Robertson (Australia) Pty Ltd Australia H. H. Robertson Hong Kong Ltd. Hong Kong H. H. Robertson Singapore Pte Ltd Singapore Robertson Nederland B.V. Holland Robertson Espanola S.A. Spain Robertson Nordisk A/S Norway H. H. Robertson Nordisk A/S Denmark Unlisted subsidiaries, considered in the aggregate, do not constitute a significant subsidiary. -131-