TY - Generic T1 - South Dakota weather modification program T2 - 40th Annual Western Snow Conference Y1 - 1972 A1 - Williams, M.W. KW - Weather modification research AB - A description of the current weather modification program as currently being carried out in South Dakota, and how it has developed over the past 10 years.The results of early uncoordinated weather modification efforts for hail suppression and summer rainfall increase experimentation are theorized.The growth of the program from individual efforts and trials to a total Local-State-Federal cooperative effort is detailed. JF - 40th Annual Western Snow Conference T3 - Proceedings of the 40th Annual Western Snow Conference PB - Western Snow Conference CY - Phoenix, Arizona UR - sites/westernsnowconference.org/PDFs/1972Williams.pdf ER -