1. b. resulting from the hazardous properties of nuclear material and with respect to which (1) any person or any organization is required to maintain financial protection pursuant to the Atomic Energy Act of 1954, or any law amendatory thereof, (2) the Insured is, or had this policy not been available would be, entitled to indemnity from the United States of America or any agency thereof, under any agreement entered into by the United States of America or any agency thereof, with any person or organization.

2. Bodily Injury or Property Damage resulting from the hazardous properties of nuclear material if:

a. the nuclear material (1) is at any nuclear facility owned by the Insured or operated by the Insured or on the Insured's behalf, or (2) has been discharged or dispensed therefrom;

b. the nuclear material is contained in spent fuel or waste at any time possessed, handled, used, processed, stored, transported or disposed of by the Insured or on the Insured's behalf; or

c. the Bodily Injury or Property Damage arises out of the furnishing by the Insured of services, materials, parts or equipment in connection with the planning, construction, maintenance, operation or use of any nuclear facility, but if such facility is located within the United States of America, its territories or possessions or Canada, this exclusion c. applies only to Property Damage to such nuclear facility and any property thereat.

3. As used in this exclusion:

a. "hazardous properties" includes radioactive, toxic or explosive properties;

b. "nuclear material" means source material, special nuclear material or by-product material;

c. "source material", "special nuclear material" and "by-product material" have the meanings given them in the Atomic Energy Act of 1954 or any law amendatory thereof;

d. "spent fuel" means any fuel element or fuel component, solid or liquid, which has been used or exposed to radiation in a nuclear reactor;

e. "waste" means any waste material (1) containing by-product material and (2) resulting from the operation by any person or organization of a nuclear facility included within the definition of nuclear facility below;

f. "nuclear facility" means:

1) any nuclear reactor;

2) any equipment or device designed or used for (i) separating the isotopes of uranium or plutonium, (ii) processing or utilizing spent fuel, or (iii) handling, processing or packaging wastes;

3) any equipment or device used for the processing, fabricating, or alloying of special nuclear material if at any time the total amount of such material in the Insured's custody at the premises where such equipment or device is located consists of or contains more than 25 grams of plutonium or uranium 233 or any combination thereof, or more than 250 grams of uranium 235; or

4) any structure, basin, excavation, premises or place prepared or used for storage or disposal of waste, and includes the site on which any of the foregoing is located, all operations conducted on such site and all premises used for such operations;

g) "nuclear reactor" means any apparatus designed or used to sustain nuclear fission in a self-supporting chain reaction or to contain a critical mass of fissionable material.