In 1972 experiments were conducted along the Gaillard Cut to test a number of different means of dispersing and suppressing fog. Among the techniques tested were helicopter and fixed-wing aircraft seeding of fogs with various fog-dispersal agents, ground-based seeding with various agents, and fog suppression by spreading monomolecular films on the canal surface. Also, tropical cumulus cloud characterization data were collected. Several techniques proved promising enough to warrant further investigation and development. Most promising for the canal area was the suppression of fog by monomolecular films. Also promising were airborne seeding with glycerine and ground-based seeding with charged bubbles.