A top secret facility buried 300-feet below Grand Central that held the key to WW2: How Hitler tried and failed to destroy the room known as M42...which was only de-classified in the 1980s
- Closely guarded sub-basement underneath the railway station is called M42 but it's not on maps or blueprints
- Nazis found out about rotary power converters powering rails Allies were relying on to move equipment and troops
- The converters could be stopped by dumping sand into them but Nazi saboteurs were caught before they could do it !
The rotary converters were working around the clock seven days a week, but they could be stopped by simply pouring a bag of sand into them.
If the converters were stopped, direct power to all the trains departing from and arriving at the terminal would have been stopped, which would have halted 80 per cent of the troop and war material movements up and down the Northeast Corridor !
More than 750,000 visitors pass through the doors of Grand Central Terminal in New York City each day, but many of them are probably unaware of the secret subterranean operations room that lies 300 feet below the building and was targeted by the Nazis during World War II because of its importance.
The closely guarded sub-basement ten stories underneath the iconic railway station is called M42 but it does not appear on maps or in blueprints and its existence was not even acknowledged publicly until the 1980s.
M42 became a target for Hitler after someone who used to work at the terminal informed the Nazis about the rotary power converters that were at work converting alternating current electricity to direct current electricity and powering the railways the Allies were relying on to transport equipment and troops across the northeastern United States.