August 1975

Legal response to environmental concerns about weather engineering was minimal  until the late 1960’s when state laws began to tighten regulation of cloud seeding operations.

 

 ” It was in Pennsylvania that one of the first laws was

passed with the intent of curbing possible

harm to nature by changing the weather. In discussing the

bill, which became the 1967

Pennsylvania law, one of its sponsors on the House of

Representatives stated:  ” Cloud seeding

involves silver iodide, and silver iodide, Mr. Speaker, is

highly poisonous. AgI used in seeding falls

everywhere, on trees, in vegetation, roofs, people and in its

synergistic action joins with motor

exhaust to become lead iodide.”

 

Link to Document