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Editorial Paimpol
Published on
Jan 3, 2025 at 6:10 a.m.
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At the start of 2025, the career from Châteaulin to Plouëc-du-Trieux (Côtes-d'Armor) is entering its last weeks of existence. The works of cessation of activity and of restoration of the site are nearing completion.
Last mine blast in 2023
Invited to a final meeting, around ten local residents and owners were recently able to follow a guided tour of the quarry, accompanied by the site's team of employees.
THE last shots mining took place on December 21, 2023.stopping crushing and dismantling of the mobile installation in May and June 2024.
Depollution
The demolition of the unpreserved buildings took place in November. In consultation with the municipality of Plouëc-du-Trieux, certain buildings were preserved for a possible future project.
The portion of wall against the cliff below the coast of Plouëc-du-Trieux has been preserved, to keep a trace of history of the career.
The hydrocarbon tanks have been removed and on this date, the company is awaiting the result of an additional diagnosis to determine the extent of the three areas deemed polluted around the workshop, approximately 10 to 20 m², the sanitation work will be carried out afterwards, the rest of the site is free of pollution
And control of the completion of this work will then be carried out in order to obtain a certificate from an approved design office in pollution des sols.
The asphalt plant will also move
It still remains to remove pools along the Trieux and to modify the water discharge circuit by a system of nozzles.
The quarry floors will be leveled to make the surfaces more homogeneous.
All of these latter tasks will be carried out during the first quarter of 2025.
On the other hand, the centrale Eurovia Breizh Enrobés neighbor, should leave the site on the horizon 2025 or 2026 and move to the Jaudy quarries site.
Last public career in France
It is in 1976that the State separates itself from the Châteaulin quarry (see box). She is taken over by the Department of the Northern Coasts. It will be the last public career in France.
The Department will operate sableof the cailloux a you granules used in the composition of road surfaces until 2016.
Finally, it is the public works company Colas which has taken over the reins since 2018 until today.
The extractions initially planned underground were not possible, the project was therefore abandoned and the operators' wish is to to sell the site to the public community.
A long story…
• The Châteaulin-sur-Trieux site belonged to the Dukes of Brittany around the year 1000.
The fortress erected in 1034 had even been the property of Duchess Anne who had it repaired.
• It then became part of the barony and it was the Viscount of Rohan who had it demolished in 1488.
• It is said that in 1845 the miller from La Roche-Jagu discovered the quarries below the ruins of the “castle”, and he then realized that the stones were suitable for manufacturing millstones for all types of mills.
• It was in 1885 that the quarry officially took off, during the construction of the Bgard-Pontrieux departmental road, under the aegis of the Pontrivien minister of public works, Yves Le Troquer.
A haven for the common raven
A page turnsplace for the moment at renaturation of the siteconducive to biodiversity, wild fauna is already installed there, and during the visit, the group had the pleasure of observing the common raven, a protected species which nests in the rocks, around the edge of the career.
Previously, this protected species nested on cliffs by the sea, but the tourist influx has pushed it to take refuge in the quarries where it is more peaceful.
The community is considering the future of this space, different avenues are being considered, but nothing has been decided for the moment.
Of the public meetings will be organized around this subject. History remains to be written…
Maryse Jacq, local correspondent
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