EXHIBIT 21
CORPORATE ORGANIZATIONAL STRUCTURE
SAFETY-KLEEN CORP.
THE FOLLOWING LIST SETS FORTH THE SUBSIDIARIES OF SAFETY-KLEEN CORP. AS OF
AUGUST 15, 2000. PARENT SUBSIDIARY RELATIONS ARE INDICATED BY INDENTATIONS.
UNLESS OTHERWISE INDICATED, 100% OF THE VOTING SECURITIES OF EACH SUBSIDIARY IS
OWNED BY THE INDICATED PARENT OF SUCH SUBSIDIARY.
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NAME OF CORPORATION STATE OF INCORPORATION
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SAFETY-KLEEN CORP. Delaware
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SAFETY-KLEEN SERVICES, INC. Delaware
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SAFETY-KLEEN (CONSULTING), INC. (9.09%) Delaware
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SAFETY-KLEEN (LONE AND GRASSY MOUNTAIN), INC. Oklahoma
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SAFETY-KLEEN (TULSA), INC. Oklahoma
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SAFETY-KLEEN (SAN ANTONIO), INC. Texas
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SAFETY-KLEEN (WICHITA), INC. Kansas
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USPCI OF MISSISSIPPI, INC. (50%) Mississippi
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SAFETY-KLEEN (DELAWARE), INC. Delaware
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SK SERVICES (EAST), L.C. Utah
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SK SERVICES, L.C. Utah
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SAFETY-KLEEN (ROSEMOUNT), INC. Minnesota
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SAFETY-KLEEN (SAWYER), INC. Oklahoma
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SAFETY-KLEEN (PPM), INC. Georgia
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NINTH STREET PROPERTIES, INC. Missouri
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SAFETY-KLEEN (SAN JOSE), INC. California
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CHEMCLEAR, INC. OF LOS ANGELES Delaware
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USPCI, INC. OF GEORGIA Delaware
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SAFETY-KLEEN HOLDINGS, INC. Delaware
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SAFETY-KLEEN (WESTMORLAND), INC. (50%) California
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SAFETY-KLEEN (BUTTONWILLOW), INC. (23%) California
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SAFETY-KLEEN (NE), INC. New Hampshire
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SAFETY-KLEEN (CROWLEY), INC. Louisiana
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SAFETY-KLEEN (LAPORTE), INC. Texas
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SAFETY-KLEEN (TG), INC. Delaware
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SAFETY-KLEEN (ROEBUCK), INC. South Carolina
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SAFETY-KLEEN (TS), INC. Delaware
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SAFETY-KLEEN (COLFAX), INC. Delaware
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GSX CHEMICAL SERVICES OF OHIO, INC. Ohio
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LEMC, INC. Delaware
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SAFETY-KLEEN CHEMICAL SERVICES, INC. Massachusetts
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SAFETY-KLEEN (ALTAIR), INC. Texas
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SAFETY-KLEEN (FS), INC. (13%) Delaware
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SAFETY-KLEEN (BDT), INC. New York
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SAFETY-KLEEN (FS), INC. (87%) Delaware
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SAFETY-KLEEN (GS), INC. Tennessee
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SAFETY-KLEEN (CLIVE), INC. Oklahoma
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SAFETY-KLEEN (WT), INC. Ohio
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SAFETY-KLEEN OSCO HOLDINGS, INC. Delaware
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SAFETY-KLEEN (NASHVILLE), INC. Tennessee
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OSCO TREATMENT SYSTEMS OF MISSISSIPPI, INC. (50%) Tennessee
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SAFETY-KLEEN (BARTOW), INC. Florida
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SAFETY-KLEEN (CALIFORNIA), INC. California
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SAFETY-KLEEN (BUTTONWILLOW), INC. (77%) California
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SAFETY-KLEEN (WESTMORLAND), INC. (50%) California
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SAFETY-KLEEN (CHATTANOOGA), INC. Tennessee
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SAFETY-KLEEN (PECATONICA), INC. Illinois
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SAFETY-KLEEN (PINEWOOD), INC. South Carolina
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SAFETY-KLEEN (WHITE CASTLE), INC. Colorado
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LAIDLAW ENVIRONMENTAL SERVICES DE MEXICO, S.A. DE C.V. Mexico
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SAFETY-KLEEN (PUERTO RICO), INC. Puerto Rico
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SAFETY-KLEEN (BRIDGEPORT), INC. Delaware
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SAFETY-KLEEN (DEER PARK), INC. Delaware
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SAFETY-KLEEN (BATON ROUGE), INC. Delaware
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SAFETY-KLEEN (PLAQUEMINE), INC. Delaware
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SAFETY-KLEEN (CUSTOM TRANSPORT), INC. Delaware
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SAFETY-KLEEN (LOS ANGELES), INC. California
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SAFETY-KLEEN (TIPTON), INC. Delaware
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SAFETY-KLEEN (GLOUCESTER), INC. Delaware
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SAFETY-KLEEN (DEER TRAIL), INC. Colorado
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SAFETY-KLEEN (MT. PLEASANT), INC. Tennessee
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SAFETY-KLEEN (MINNEAPOLIS), INC. Minnesota
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SAFETY-KLEEN (ARAGONITE), INC. Delaware
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SAFETY-KLEEN (SUSSEX), INC. Delaware
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SAFETY-KLEEN (ENCOTEC), INC. Delaware
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SAFETY-KLEEN SYSTEMS, INC. Wisconsin
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ECOGARD, INC. Delaware
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CURBSIDE, INC. (49%) California
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SK EUROPE, INC. Nevada
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DIRT MAGNET, INC. Colorado
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THE MIDWAY GAS AND OIL CO. Colorado
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SAFETY-KLEEN CANADA INC. 1 New Brunswick
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RYAN & PATRICK HOLDINGS INC. Ontario
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ARDEE SOLVENT INC. Ontario
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ARDEE RECYCLING INC. Ontario
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ARDEE OIL INC. Ontario
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ENVIRONNEMENT SERVICES ET MACHINERIE E.S.M. INC. Quebec
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ELGINT CORP. Nevada
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SAFETY-KLEEN ENVIROSYSTEMS COMPANY California
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SAFETY-KLEEN ENVIROSYSTEMS COMPANY OF PUERTO RICO, INC. Indiana
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PETROCON, INC. Delaware
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PHILLIPS ACQUISITION CORP. Delaware
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SAFETY-KLEEN (CONSULTING), INC. (90.91%) Delaware
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SK REAL ESTATE INC. Illinois
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SAFETY-KLEEN INTERNATIONAL, INC. Delaware
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SAFETY-KLEEN OIL RECOVERY CO. Delaware
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SAFETY-KLEEN OIL SERVICES, INC. Delaware
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- -----------------------
(1) 3095-7146 Quebec Inc. holds 711,199 Class Z shares (however, they are
physically held by Safety-Kleen Canada Inc. and Safety-Kleen Systems,
Inc. as collateral for payment of outstanding loans).
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THE SOLVENTS RECOVERY SERVICE OF NEW JERSEY, INC. New Jersey
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3E COMPANY ENVIRONMENTAL, ECOLOGICAL AND ENGINEERING (75.8%) California
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SAFETY-KLEEN LTD. New Brunswick
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510127 N.B. INC. New Brunswick
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SAFETY-KLEEN SERVICES (QUEBEC) LTD. Quebec
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SAFETY-KLEEN SERVICES (MERCIER) LTD. Quebec
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SK D'INCINERATION INC. Quebec
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