National Geographic : 1945 Aug
Acme byFrank Cancellare Bamboo Poles Bend Like Bows under Buckets of Mud, the Glue That Binds the 8,700-foot Runway Poured into cracks and sun-dried, mud keeps the rocks from shifting. Heavy blocks (right) are foundation stones. Over them cobbles arespread. Smaller sizes form the crust. Twenty inches thick, this stony carpet took 100,000-pound blows from B-29's without a dent. Foremen for some gangs kept human timecards by stamping the arm of each worker with his haulage record.