When Jane and Rod appear in the aircraft there is no microphone showing but seconds later there is one showing on the window frame along with a different instrument cluster - clearly two different aircraft.
Once the news comes through that the mine is safe, the two villains watching get into a cat and mouse situation, with one attempting to run the other down using their Rolls-Royce. This culminates with the man on foot throwing a rock at and hitting the windscreen, causing the driver to lose control. But the shot from the throwers' point-of-view of the approaching car (his last sight) shows the windscreen undamaged.
Although signage usually says "independent blasting", the label on the control panel for the explosives is misspelled as "independant blasting".