Chapter 9a. Weather Modification Activities or Attempts; Reporting Requirement 15 U.S. Code §330. Definitions 15 U.S. Code §330a. Report requirement; form; information; time of submission 15 U.S. Code §330b. Duties of Secretary 15 U.S. Code §330c. Authority of Secretary 15 U.S. Code §330d. Violation; penalty 15 U.S. Code §330e. Authorization of appropriations