Manning W. Riser, Pontchartrain Works manager, makes routine inspection of corn for traces of damage due to air pollution. Gardening, one of manE™s oldest and most profitable hobbies, has taken on an important new role at the DuPont Pontchartrain Works in Laplace, Louisiana. While they produce food, as all gardens are supposed to, the three small garden patches in the midst of Du PontE™s multimillion-dollar industrial complex also serve as excellent air pollution gauges. New Orleans

Photo is dated 1968.

Photo measures 10 x 8.25 inches.