The sky train, the train on air cushion. Bertin The company developed several prototypes of this type of train. The test tracks were built in 1965. The smallest to the Gometz Chatel and the largest near Orleans, over 20 kilometers long.

The concrete track is shaped like an inverted T. The world record speed for a vehicle air-cushion was established March 5, 1974. The record speed is 430 km / h. In June 1974, the company Bertin sign a contract for the construction of a high-speed line between the town of Cergy and business district "La Défense". A few months later, the French government reversed its decision and abandon the project.

The failure of the project has several assumptions:
- The oil crisis of 1973.
- Lobbying by the company National Railways (SNCF) and the metallurgic industry.

The engineer Jean Bertin died December 21, 1975. In 1978, the permanent cessation of testing. The prototypes are still 14 years in the hangar. Then the hangar is the victim of arson. The test track Gometz le Châtel no longer exists. It has been replaced by a tunnel bypass to relieve the downtown traffic jams.

Orleans-Saran line still dominates the fields of the campaign. That would be too expensive to demolish it, especially since it nobody.

source: Wikipedia

The quarry of Annet on Marne is called "Purpled". The all quarry is in bad shape. Ceils are down on many places. See this pillar who does not support the ceil anymore...

The Degond factory is one of the oldest factories of Longueville. She moved strategically close to the station after the track railway completed. It will employ up to 800 people in the village of Longueville and surrounding areas in manufacturing seamless tubes by stretching, before closing in 2003.

The decontamination and demolition of the site would cost more than 5 million euros. The company had already been convicted in the 1990s due to pollution of the river near the village: The Voulzie. Concentrations of hydrocarbons and chlorinated compounds detected in 2007 are still worrisome.

To access the roof of the French comedy, you must go through the Constitutional Council, guarded by the gendarmerie. The place is significant, but so beautiful that one wonders why it does not officially open to visitors ...

We have not finished visiting these quarries ... The light will weak as our forces, we will break the silence on his knees and night. Ah yes, screaming for hours in a well! And to move from darkness to heat without bending the front. They are, these rats-moles, digger and well talkers!

LeDuc June 13, 2001

Photography taken on the top of the iron virgin. The iron comes from russian canons, taken during an old war of the second empire. At the back, you can see the cathdral of Le Puy en Velay.

Like many industrial buildings, the warehouses of the ICC (International Chamber of Commerce and Industry) have been constructed to withstand heavy loads. Both buildings have followed the trend of increasing concrete, early twentieth century. In the manner of some cathedrals, the lower floors boast a strong and massive concrete pillars whose diameter decreases gradually with height in stages. This is especially evident when one observes the facade from below.

Originally, these warehouses were used to store grain and flour. In taking possession in 1929, the ICC enjoys a strategic investment (The Ourcq channel, railway) and modernized the building to add elevators, more capable than the old mobile cranes to the variety of Goods transiting.

Note: This building was the setting for the movie Dobermann by Jan Kounen (nightclub on the docks).

Curiosity, while the soil underground is gross, it is possible to call an elevator to the surface in music! Of course, this stage is not on a secret control panel, it is not possible to go down this way (unless you have a key, perhaps).

A plaque engraved in underground quarries of Paris.

Railway extended Sceaux in Paris.
The consolidation of existing quarries in the way
railway was begun February 25, 1892
under the direction of Mr. O. KELLER
Chief Engineer of Mines Inspector General of Quarries.
by G. HUMBERT mining engineer
and completed on 1 May 1893

The tunnel entrance of the small ring in the Parc Montsouris.

The creation of a railway track near Paris was decided in 1851. Very quickly, the main stations of Paris are linked, including that of Bercy. In 1867, the loop is completed.

Following the increase in passenger traffic on the subway, going to the inner ring decreases. In 1934, there is more train traveler. Only freight trains. In 1993, the entire line is abandoned, with the exception of the line that runs along the banks of the Seine, used by commuter trains.