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Origin and history

The Rey lime ovens, located in Regnéville-sur-Mer in the Manche department, were built between 1852 and 1854 according to the plans of engineer Pierre Simoneau. These four ovens, using the innovative so-called Simonneau process, allowed wood or coal to be cooked to produce oily lime, mainly intended for the amendment of the acidic lands of the West Armomeric. Their establishment was based on a local limestone deposit and the adjacent grounding port, where Welsh coal and limestone were transiting to Brittany and the Channel Islands. The activity ceased around 1880, with the decline of agricultural liming.

The site, abandoned for a century, was rediscovered in 1982 thanks to the initiative of two enthusiasts: Jean-Claude Énault, mayor of Regnéville, and Luc Macé-Malaurie, director of the Conservatoire de musique. Their cultural project culminated in 1983 in an inaugural concert (Beethoven, Haydn, Haendel) which attracted 600 spectators, reviving interest in the ovens. These, registered as historical monuments in 1991, were restored and transformed into a maritime museum, managed by the Department of the English Channel. Today, the museum traces the industrial and maritime history of the village, including the reconstruction of a corderie closed in 1925 and exhibitions on cabotage.

The history of Regnéville-sur-Mer, an active port from the Middle Ages, is closely linked to these furnaces. In the 19th century, the town was a commercial hub: the medieval fairs of Agon and Montmartin attracted merchants, while the shipowners of Le Havre and Honfleur organized fishing in Newfoundland. Lime kilns, although briefly exploited, illustrate this transition from a traditional maritime economy to early industrialisation. Their preservation also symbolizes the preservation of a regional industrial heritage, which is now valued by cultural and educational activities.

The Simonneau process, characteristic of the Rey furnaces, is distinguished by an open-air structure with three levels: the tailgate (loading), an intermediate space for monitoring, and the level of unloading. Two galleries equipped with secondary fireplaces were able to burn in a row, optimizing cooking. These technical innovations, combined with the strategic position of the site (proximity of limestone and port), made the furnaces an ephemeral efficiency model. Their early decommissioning reflects the agricultural changes of the late 19th century, marked by the gradual abandonment of limestone amendments.

Today, the Rey lime ovens belong to the Conseil départemental de la Manche, which maintains them as part of the network of departmental sites and museums. The adjacent maritime museum offers models, old tools, and a wreck to evoke the lives of sailors, from calfat to riggers, as well as the golden age of cabotage. A film about the medieval castle of Regnéville, once protector of the port, completes the visit by linking maritime and architectural heritage.

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