In the scene where Dan and Vicky are discussing his secretary (Miss Murphy), Dan is standing with his arms crossed in front. His left hand is over his right arm. When the scene changes view, his left hand is under his right.
Dan Christy asks what the melting point of magnesium is and the answer McTavish gives is wrong. He says, "Three thousand, five hundred degrees Fahrenheit, sir." The actual melting point of magnesium is 1,202 degrees Fahrenheit (650 degrees C).
Early on Dan is given a plane ticket to Lake Louise. In fact, the closest airport to Lake Louise is 200 km. away in Calgary, Alberta.
John Payne is wearing a wedding ring on his left hand through out the movie. This is peculiar because he is pursuing Betty Grabel in the movie.