Family quarry shows circular economy example

Canteras de Santullán, a family-owned limestone quarry in Castro Urdiales, was highlighted on May 14 by *El Diario Montañés* as an example of how European sustainability and circularity policies are being applied at a local mining operation. The company has operated in the area since the 1960s and says it is now run by the fourth generation of the owning family. Its public materials describe a business built around high-purity calcium carbonate for industrial uses, construction and civil works. The company’s own website and a March 2026 note from Fundación Minería y Vida place Santullán inside a wider industry push to present mining as compatible with environmental reporting, process upgrades and circular-economy standards. Fundación Minería y Vida said the quarry was recognized by the European Commission in 2019 as an example of best available techniques in mining, resource use and circular economy practice. (eldiariomontanes.es) ### What is Canteras de Santullán producing in Castro Urdiales? Santullán says its quarry sits on a 300-meter layer of Urgonian limestone covering about 2.8 square kilometers in Cantabria. The company says the deposit has more than 99% calcium carbonate purity and supports annual production of more than 2 million tons of crushed mineral. The company says those materials are sold for industrial plants, construction work, civil engineering and exports through the Port of Bilbao. (fundacionmineriayvida.org) Its website lists gravels, sands, micronized products, breakwater stone and other calcium-carbonate derivatives among its outputs. ### What makes this a circular-economy case rather than a standard quarry profile? *El Diario Montañés* said the company’s feature centered on sustainability and circularity, and cited a chart showing a 72% reduction in CO2 emissions with figures externally audited under ISO 14064-1. (santullan.com) The quarry website also lists ISO 14064-1, ISO 14001, ISO 9001, ISO 45001 and UNE 22480 certifications or management standards among its published credentials. (santullan.com) A February 18, 2025 emissions document published on the company site says it covers direct and indirect significant emissions for 2021-2023. That document does not, in the excerpt available, detail the full methodology behind the 72% figure, but it does show that the company has maintained externally reviewed greenhouse-gas reporting. (eldiariomontanes.es) ### How does the company describe the operational changes behind those claims? Canteras de Santullán says it has made continuous investments in production processes, machinery and environmental improvements. Its website says the company owns all mobile quarry machinery and has expanded crushing, grinding, classification and storage capacity so plants can work separately or in parallel. The company says that flexibility lets it produce and stockpile different specifications at the quarry and at the Port of Bilbao. (santullan.com) In its public policy statement, it says management is committed to continuous improvement, legal compliance, reducing environmental impacts and using transparent mining-sustainability indicators. ### Who is running the business, and how does it frame its local role? (santullan.com) Fundación Minería y Vida said in March 2026 that the quarry is managed by the fourth generation of the founding family and has more than 60 years of history. The company website separately describes the operation as having more than 60 years of track record, while another page markets the quarry as having more than 75 years of experience, a discrepancy visible across its own materials. (santullan.com) The company says its workforce is stable, mostly local and hired directly with little outsourcing. Fundación Minería y Vida said the quarry also supports local education and takes part in outreach and sector events tied to mining, safety and sustainability. ### Is the quarry’s environmental record uncontested? Ecologistas en Acción and local political groups have challenged the company’s restoration plans and environmental compliance in recent years. (fundacionmineriayvida.org) Public reports in 2024 said critics argued a new restoration plan would reopen the north face of the Peña de Santullán and increase impacts near nearby urban areas, while a regional court ruling had required the administration to address sanction proceedings and seek a new restoration plan subject to public information. (santullan.com) Those disputes sit alongside the company’s sustainability messaging and official recognition cited by industry groups. The result is that Santullán is being used publicly both as an example of industrial adaptation and as a focal point in a local debate over restoration, oversight and land use. ### What comes next that readers can actually watch? (castroconfidencial.es) The company’s next visible milestones are likely to come through the same channels already in use: updated certification and emissions documents on its website, export activity through Bilbao, and participation in mining-sector bodies such as Fundación Minería y Vida. Local scrutiny is also continuing through public restoration procedures and reporting around the Peña de Santullán site in Castro Urdiales. (santullan.com) (fundacionmineriayvida.org)