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  1. Lunch atop a skyscraper
  2. New York Construction Workers Lunching on a Crossbeam
  3. Construction Workers Resting on Steel Beam Above Manhattan
  4. Crankshaft Grinding Department At Ford Motor Company
  5. Construction Workers Resting on Steel Beam Above Manhattan
  6. Steelworkers on girders of the Empire State Building, New York City, 1931
  7. Steel workers on girders at the Empire State Building in New York City, 1930
  8. Icarus, Empire State Building
  9. Suspension bridge during construction over the irrigation canal near Giza, 1916
  10. Model T Chassis In Highland Park Ford Plant
  11. World War II: Women Welders
  12. Blast Furnance At The Bethlehem Steel Works In Pennsylvania
  13. The assembly line at the Ford automobile plant in Highland Park, Michigan, 1913
  14. ENIAC computer was the first general-purpose electronic digital computer
  15. Women Marines lower a reconditioned engine back in place in a Marine Corps bus
  16. Worker On Panama Canal Lock
  17. Telephone operators working on an international switchboard in the 1930s
  18. Men Working One Mile Back In Mine
  19. Testing The Life Of Light Bulbs
  20. Production Line Of B-24 Liberators
  21. Construction Of Panama Canal Locks
  22. Oilfield At Spindletop
  23. Golden Gate Bridge Under Construction
  24. Assembly Of B-24 Bombers At Willow Run Plant
  25. Douglas Aircraft Factory, Two women at work
  26. Empire State Building, 1930, Steel workers on girders at Empire State Building
  27. Michigan, Lumbering
  28. Ford Auto Factory
  29. Oil Well Field
  30. Coal Miners Using Automatic Conveyor
  31. Construction Of The Woolworth Building, New York
  32. World Trade Center Under Construction
  33. Oil Derricks In California
  34. Hine: Steelworker, 1931, atop the Empire State Building
  35. Horses Hauling Huge Load Of Logs
  36. Women installing an aircraft engine at the Douglas Aircraft plant, Long Beach, CA, 1942
  37. Gold miners in front of a mine shaft
  38. NYC Factory, C.1900
  39. Olympic And Titanic Being Built
  40. Timber Logging, Late 19th Century
  41. World War I: Women Workers, welding bomb casings
  42. Steelworker atop the Empire State Building, New York City, during its construction, 1931
  43. Women learning aircraft construction in Florida as part of the war effort, 1942
  44. Electricity Generated In Laboratory
  45. Manhattan Bridge Under Construction, 1909
  46. Oil Rigs Near Taft, California
  47. Manhattan Bridge Under Construction
  48. RMS Queen Elizabeth at John Brown docks, August 1938