(3) Resulting from the hazardous properties of nuclear material, if

(a) The nuclear material is at any nuclear facility owned, or operated by of or behalf of an Insured or has been discharged or disbursed therefrom, or

(b) The nuclear material is contained in spent fuel or waste at any time possessed, handled, used, process, stored, transported or disposed of by or on behalf of an Insured, or

(c) The personal injury or property damage arises out of the furnishing by an 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 (3)(c) applies only to property damage to such nuclear facility and any property thereof;

As used in this exclusion

The words "Property Damage" include all forms of radioactive contamination of property.

"Hazardous Properties" include radioactive, toxic or explosive properties;

"Nuclear Material" means source material, special nuclear material or by-product material;

"Source Material", "Special Nuclear Material" and "By-Product Material" have the meanings given them in the Atomic Energy Act of 1954 or in any law amendatory thereof;

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

"Waste" means any waste material containing by-product material resulting from the operation by any person or organization of any nuclear facility included within the definition of "Nuclear Facility" under paragraph (1), or (2) thereof;

"Nuclear Facility" means

(1) Any nuclear reactor;