1967 WEATHER MODIFICATION – REGULATING RAINMAKING Zero Geoengineering Posted on September 12, 2017 by Jolie DianeNovember 25, 2017 The General Assembly of the Commonwealth of Pennsylvania Act of Jan. 19, (1968) 1967, P.L. 1024, No. 449 Providing temporarily for the regulation and licensing of rain- making activities; Link to Document Share this:FacebookTwitterTumblrRedditEmail Related