Cogemacoustic®, Sorgafra group company specializing in ventilation systems, the study, design and construction of ventilation in mines, tunnels and hydroelectric plants.



  • Specialised in the ventilation and dedusting of mines, tunnels and underground facilities, Cogemacoustic® offers you a wealth of experience for the identification and analysis of your needs.
  • All our preliminary engineering, terms of reference or expert missions are guided by one goal: follow the latest recommendations in terms of workers' safety, working conditions and noise pollution.
  • For standard or made-to-measure ventilation solutions, our engineers are consistently striving to seek and develop new solutions and to always better adapt them to your specific needs.

The story of the Etudes et Constructions Electromécaniques (ECE) company, an SME based in the French department of Haute-Vienne (87), goes back to 1968.

  • 1968The company was established in the city of Rochechouart. It specialized in the manufacturing of machines for the footwear and leather goods industry.
  • 1987It was bought in September 1987 by Robert ORIEZ, who integrated it to his SORGAFRA holding. In order to give new impetus to the company, he decided to redirect the company's business towards the study and the manufacturing of special industrial equipments. And thus ECE became a designer and manufacturer of special purpose machines. The SORGAFRA Group provided itself with the means to successfully implement this innovative and proactive development policy, by investing extensively.
  • 1988Creation of an engineering office and the extension of the production site, the surface of the company's facilities was brought up to more than 3,500m2. Production means were modernized.

  • 1992The SORGAFRA Group started offering its customers a complete range of diversified mechanical services (robotic special structures, mechanical subcontracting...).
  • 1995Acquisition of the Cogemacoustic® brand from the former COGEMA company enabled ECE to open up to export and to embrace new perspectives at international level. Its new business in the ventilation of underground environments enabled the company to approach the global market and enter into significant contracts with many international customers, especially in Asia, the European Union, Central Europe, Maghreb, South America, the US...
  • 2008Significant investments were made to establish a new factory on part of the site of former RENAULT TRUCKS factories in Limoges. Today, as a result, in huge fully refurbished facilities, ECE has been pursuing its development and the implementation of a dynamic policy to take on today's challenges and build for the future.
  • 2015Launch of jet fans for permanent ventilation.
  • 2017End of the special machines departement to focus on our core activity, underground ventilation & dedusting.