**Certificate Concerning:**

The insurance provided is with respect to the following properties: "Nuclear material" means source material, special nuclear material or byproduct material as defined in the Atomic Energy Act of 1954 or any law amendatory thereof; "spent fuel" means any solid element or fuel component, solid or liquid, which has been used or exposed to radiation in a nuclear reactor and (1) contains any noble transuranic element other than plutonium and (2) resulting from the operation by any person licensed under the Atomic Energy Act of 1954 of a nuclear facility under paragraph (a) or (b) thereof; "nuclear facility" means:

(a) any nuclear reactor,

(b) any equipment or device designed or used for (1) separating the isotopes of uranium or plutonium, (2) processing or converting spent fuel, or (3) radioisotope processing of gases and waste.

(c) any equipment or device used for the processing, isolating or allowing of special nuclear material if at any time there exists on such material in the custody of the insured at the premises where such equipment or device is located, more than 25 grams of plutonium or uranium 233 or any combination thereof, or more than 25 grams of uranium 235.

(d) any structure, basin, excavation, vessel, or place used or used for the storage or disposal of waste.

All includes the site on which any of the foregoing is located, all operations conducted on such site and all premises used for such operations, and all or any of elements any apparatus designed or used to sustain nuclear fission in a self-sustaining chain reaction or to contain a critical mass of fissile material;

**"Injury" refers to injury to or destruction of property. The word "injury" or "destruction" includes all forms of radioactive contamination of property.**

**21. This Certificate may be cancelled by either party upon written notice, such notice to be not less than the number of days set forth in Item 6 of the Declarations. If cancellation is at the request of the Insured, adjustment of premium shall be at short rate and if cancelled by the Company, adjustment shall be pro rata. However, in the event the underlying insurance immediately preceding this Certificate is cancelled or not renewed by the insurance Carrier or Carriers of such underlying insurance, this Certificate terminates as of the same date with the notice to the Insured.**

The Company may, however, cancel this Certificate absolutely on five (5) days notice for non-payment of premium due. Notice shall be given to the Insured to the Company at One Liberty Plaza — 64 Liberty Street, New York, New York 10006, and by the Company to the Insured at the latter's address as shown in the Declarations. Notice to the Company so the first named Insured, if more than one, shall be deemed notice to any other interests included as an Insured.

**IN WITNESS WHEREOF** the AMERICAN REINSURANCE COMPANY has caused this Certificate to be signed by its Vice President and Secretary, but same shall not be binding upon the Company unless countersigned by an authorized representative of the Company.

R. A. LUM
T. DARRINGTON SEMPLE, JR.