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Mine survey work that formerly took three or four months of labor with between 20 and 30 men now can be done in two to three hours with a helicopter. (...)
Mine survey work that formerly took three or four months of labor with between 20 and 30 men now can be done in two to three hours with a helicopter. (...)

Mine survey work that formerly took three or four months of labor with between 20 and 30 men now can be done in two to three hours with a helicopter. (...)

Date6/5/1945
Names
FormatPicture
Notes
Original Toronto Star caption: Mine survey work that formerly took three or four months of labor with between 20 and 30 men now can be done in two to three hours with a helicopter. Hans Lunenberg; Toronto mining engineer; devised the procedure for making surveys from the cabin of the plane. He is shown here holding the wheel of the helicopter as it hovers motionless over his head.
Subject
    Language
      ProvenanceFrom the Toronto Star Archives
      Usage Rights Public Domain (Learn More)
      Object NumberTSPA_0003516F