This January 1968 Report on Joint Hail Suppression Research Program in Northeastern Colorado describes the background and inspiration for the project, the project's aims and collaborators, the premises on which the cloud-seeding techniques for hail suppression are based, immediate and long-term o... Show moreThis January 1968 Report on Joint Hail Suppression Research Program in Northeastern Colorado describes the background and inspiration for the project, the project's aims and collaborators, the premises on which the cloud-seeding techniques for hail suppression are based, immediate and long-term objectives of the project, and equipment which will be utilized to reach those objectives. Show less