When Dagney and Ken Danagger talk in his office, the ashtray has two cigarette butts in close-ups, and one in the long shots.
In Part 1, "the motor" is vertical. In Part 2, "motor" is horizontal and twice as big as in P1.
At the beginning of the movie when Dagny is about to crash into the mountain side, she says twice: Who is John Galt?
When the scene plays out again at the end of the movie, she says it after passing the mountain, and she says it only once.
The moving part of the "Rollout switch", the 'switch rail' is shown for a railroad switch for track going off to the right. When the Army Special freight train is shown driving over the switch, the switch is shown to go off to the left.
Then the male news reporter is delivering the news stories, throughout the movie, the digital globe is spinning the wrong way - thus the sun would rise in the west and set in the east.
The locomotive of the Army Freight Special is rendered after an EMD F59PH, a 4 axle dedicated passenger locomotive with a Canadian 3 window safety cab and full width cowl body. While a similarly designed EMD 6 axle full width cowl locomotive, the SD40-2F, and the 4 axle GP40-2W have been used for freight trains, the F59PH was never designed or used for freight service.
The characters pull up the track at a bridge that only goes back a small distance, and ends in grass.
When Rearden and Dannagger discussing the steel shipment in the hotel, an establishing shot shows the exterior of the Wayne-Falkland as a typical glass-and-steel NYC cube. One the back of the hotel door is a standard fire-escape map showing the floor plan of a curved building, presumably the hotel where the interior shots were filmed.
(at around 1h 20 mins) The cab of the replacement steam locomotive is an older F-type diesel locomotive.
After the plane crash, a section of the fuselage above a window is partially transparent. When the camera continues to move, the section becomes opaque, a digital compositing error.
Steam locomotives were still in use back in 1957 when the book was published, however they had long passed from the scene by 2016 which is the year that the movie is set in. Staying faithful to to the crash as described in the novel created what can be considered a possible anachronism.
When they are removing the rails from the John Galt line, the text on the screen says it is March 31. Nowhere in Colorado would be so green in March nor would any deciduous trees be completely leafed out as the ones in this scene are. In fact, it will be at least another month or two until the leaf buds even begin to swell before producing leaves.
James Taggart tells Dave Mitchum on the phone that if he doesn't get the stuck train that Kip Chalmers and his friends are on moving that he'll be out of a job. However, Directive 10-289 would have forbidden it as workers are no longer able to leave their places of employment.
When James Taggart tells Dave Mitchum on the phone that is he doesn't get the stuck train that Kip Chalmers and his friends are on moving that he'll be out of a job, Directive 10-289 would have forbidden it as workers are no longer to leave their places of employment.
During one scene, a newspaper spells Washington "Washinton."
At the end of the scene where Hank Reardon has a lunch meeting with Ken Danagger, the two men shake hands and Ken Danagger says: Good to see you Ken. Ken should say: good to see you Hank.