On July 25, 1916, catastrophe struck five miles off the shore of Cleveland, Ohio. Workers digging a municipal water intake tunnel beneath Lake Erie hit a pocket of natural gas, triggering a violent explosion. The underground shaft, 225 feet below the water surface, instantly filled with suffocating, toxic fumes.
Eleven tunnel diggers died immediately, and two subsequent rescue parties dispatched into the inferno quickly collapsed from gas poisoning, increasing the death toll. With local authorities desperate and out of options, someone remembered a brilliant local African American inventor named Garrett Morgan. Morgan had previously patented a "safety hood," a primitive predecessor to the modern gas mask designed to filter smoke for firefighters, though it was largely untested in a full-scale real-world disaster.
Awakened at 3:00 AM, Morgan, his brother Frank, and two courageous volunteers rushed to the lake crib still wearing their pajamas, equipping Garrett's canvas hoods. The unusual apparatus featured long intake tubes reaching to the floor, exploiting the physical principle that clean air sits lower than rising toxic fumes, alongside a sponge filter moistened with water. Facing pitch-black darkness and lethal gases, Morgan personally made multiple harrowing trips down the shaft.
He pulled four survivors to safety and helped recover the bodies of fallen workers when no one else could breathe the air. Although Morgan's invention proved astonishingly effective, intense racial prejudice led city officials to initially ignore his heroism and withhold official awards. Despite this injustice, news of the miraculous rescue spread nationwide, prompting fire departments across America to order Morgan's hoods, ultimately saving countless lives and laying the technological groundwork for gas masks used by soldiers during World War I.