Via Ferrata de l’Horloge

12 points of interest

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  History

  The vertical compressor

  In 1910, a 22-year-old engineer, Gilbert Planche arrived in L'Argentière-La Bessée to take advantage of the water here and open a large aluminium factory.

  The vertical compressor is the forerunner of the pneumatic drill. The mine operators needed a large quantity of coal and compressed air helped to accelerate coal output. In 1852, Swiss physicist Jean-Daniel Colladon invented the pneumatic drill. The vertical compressor enabled the production of compressed air which powered a drill and simplified coal excavation. The compressor is placed vertically on its support, hence its name. 

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  History

  Louis Leprince-Ringuet and L'Argentière

  Louis Leprince-Ringuet was the director of the Physics Laboratory of X ("X" being a polytechnic school in Villeurbanne) established in L'Argentière. During the summer of 1942, he took in several Jewish students, thus saving them from the Nazis and deportation to Auschwitz. A panel presents the discoveries made by Louis Leprince-Ringuet in this laboratory. A text by Bernard Lévi is also displayed. As a young Jewish student, he took part in research at the laboratory during the summer of 1942. In it he thanks the scientific team for helping him to escape the anti-Semitic barbarism.

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  History

  The Péchiney factory

  This French electro metal company established itself in L'Argentière in 1907. The construction of the aluminium factory started in 1909 and it opened its doors in 1910, powered by the electricity plant built by Gilbert Planche. With it, L'Argentière became an industrial town. The economic crisis of the 1970s and the rise of foreign sources of supply led to the factory's closure in 1985. It was partially demolished in 1988. The workers left the town and in order to prevent the abandonment of L'Argentière, a restructuring project was launched. 

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  History

  The Francis turbine

  The American James Francis developed the Francis turbine between 1849 and 1855. It is a “àreaction” turbine suitable for medium-sized waterfalls (with a water head of between 15 and 500 metres). The water enters the turbine and then circulates between the turbine blades, which are fixed, while the inner wheel is mobile. The pressure at the wheel intake is greater than the pressure at the outlet. 

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  History

  The Mines de Fournel rail-cars

  Filled with materials excavated from the mine face, the rail-cars were pushed along the rails by the miners.  

  They were called “mine dogs”. They were originally made from wood and over time iron pieces were added. They were made entirely from metal by the end of the nineteenth century. 

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  History

  The mobile compressor

  In the mines, compressed air is used to remove dust and to create power for the drills. The mobile compressor holds compressed air in a resistant tank. This is brought to a high pressure via a pump (the compressor). The compressed air is then distributed to the mine machinery through a conduit system.

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  History

  The giant aluminium bar

  A young metal, aluminium is the most abundant metallic element on earth. Today, the aluminium industry is the second biggest after steel. 

  This enormous ingot was made in L'Argentière-La Bessée. 

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  History

  The light rail tractor

  A locomotive? No, its little cousin, the light rail tractor. This replaced manually pushed carts and horse-drawn vehicles. Less powerful than a locomotive, it travelled along narrow-gauge tracks which could be laid on different types of terrain. An information panel also described the role of this vehicle during the Great War.

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  History

  The old workers' housing districts

  Workers' housing districts were built to house the many workers who were employed at the Péchiney factory. These districts have now been demolished. The architecture of the houses varied according to the status of the employee. A town hall, a cinema, a bandstand and churches were also constructed. 

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  History

  The clock of Hermes

  The Tour des Hermes is a clock tower built in 1922 by the Gilbert Planche company which used to run the aluminium factory in L'Argentière. It would chime to remind the factory workers of the time, and to make sure they arrived for work on time!

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  Panorama

  The view over the Durance valley

  Protected from Atlantic influences by the Pelvoux massif, the upper Durance valley is subject to a very dry climate, with wide seasonal temperature fluctuations. It features grasslands very similar to the steppes of Central Europe, and which are rare in France. It is part of the Natura 2000 site, “Steppique durancien et queyrassien”.

   

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  History

  Former industrial area of L’Argentière-la-Bessée

  On the two walls of these now-disused industrial structures, you can read the history of L’Argentière-la-Bessée. The town is marked by its industrial past, in particular by the presence of a hydroelectric power station built between 1907 and 1909 to harness the power of the mountain waterfalls. At the time, it was the most powerful power station in Europe. Other industries were also established here, like the Société du Quartz Fondu fused quartz works and the aluminium factory which provided livelihoods for a large number of workers.