Description of the company

Nordkalk Group, owned by UK-based SigmaRoc PLC, is the leading limestone company in Northern Europe, with a significant presence in Central Europe. The parent company Nordkalk Oy Ab, operating in Finland, has 11 limestone mines. The largest mines are in Parainen, Lappeenranta and Tytyri in Lohja, with Tytyri being an underground mine. These three mines, which have been in operation over one hundred years, represent over 90 % of Nordkalk’s limestone production in Finland. In addition to limestone, Nordkalk mines gangue and wollastonite in Lappeenranta. Juuan Dolomiittikalkki still operates as its own company and thus has not been included in the report for the year 2025, unless otherwise stated.

Nordkalk’s business activities are not limited to mining; it also manufactures quicklime and slaked lime. However, these aspects are not the focus of this report.

Link to the company's responsibility report →

Social Responsibility Report

Company in figures

  • Production volume: Finland total 2,3 Mtons
  • Total mining: Finland total 3,5 Mtons (about 42% production and 57% gangue)
  • Reported one reserves: Confidential
  • Reported mineral reserves: Confidential
  • Year of commencement: 1897 (Tytyri), 1898 (Parainen), 1910 (Lappeenranta)
  • Expected remaining life of the mine: Lappeenranta more than 50 years, Parainen 20-30 years, Tytyri 30-50 years
  • Mining area: Mining concession Finland total 1754 ha
  • Number of own employees (31.12.): Nordkalk 268, Suomen Karbonaatti 28, Juuan dolomiittikalkki 3 Total: 299
  • The main localities of the employees: Lappeenranta 35%, Parainen 34%, Lohja 15%
  • Operating profit EBITDA: 12.3 M€
  • Paid capital gains tax: 3.1 M€

Information about prospecting

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  • Number and area of reservation areas: -
  • Number and area of exploration permit areas: -
  • Number and area of exploration permit application: -
  • Exploration permits under appeal: -
  • Exploration drilling: -

Environment

The company's environmental practices:
Yes No
Location in a nature reserve*
Environmental Management System **
Environmental impact assessment required (in accordance with the EIA Act) *
Measurements for dust
Measurements for noise
Measurements for vibration
Environmental risk assessment carried out
Deviations from environmental permits ***
Closure plan for the mine
Plan for the controlled shutdown of the mine in unexpected situations
  • * Mining concessions in Pargas, Vimpeli, Mustio and Kolari are partly or completely overlapping with Natura2000 or protected areas, total about 30 ha
  • ** Certified ISO 14001
  • Environmental permit granted: kyllä
  • Year of permit: All sites have valid environmental permits, some locations have multiple overlapping permits. In total there are about 35 environmental permits, including changes to these permits.
  • Link of permit: https://ytietopalvelu.lvv.fi/fi-FI
  • Guarantee in accordance with the Environmental Protection Act: 704 400 €
  • Financial guarantee in accordance with the mining act in the mining permit area: 1 962 993 €
  • Financial guarantee in accordance with the mining act in mineral exploration permit area: -

Key Figures

  • Amount of mining waste: Finland total 0,8 Mtons (10 % tailings, 90 % gangue)
  • Utilixation of extractive waste: Finland total 59 % tailings and 85 % gangue
  • Fuel Consumption: 19
  • Other energy consumption: Electricity 18 GWh, Heat 1 GWh
  • CO2 emissions from the mine: Scope 1 (fuels, explosives, mine heating) 4818 t CO2e / Scope 2 (location based) 1243 t CO2e
  • Water consumption: Finland total 0,4 Mm3
  • Discharge of water outside the mining area: Finland total 5 Mm³
  • Number of dams in the mining area: 1
  • Endangered species are present in the operational area: kylla
  • Use of environmentally hazardous chemicals: 177
  • Biodiversity actions: In summer 2025, Nordkalk continued nature management work across Finland. In Pargas and Vim-peli, the work followed the same model as last year, and in addition, a new collaboration was launched with the Ketosirkka project of the Finnish Association for Nature Conservation’s Uusimaa District, covering Tytyri, Mustio and Sipoo.

Personnel and security

The company's personnel practices:
Yes No
Staff initiative system
Performance appraisals concerning the entire personnel
Staff training plan
Equality plan
Employee representation in company administration
Occupational health and safety management system*
Occupational safety card for everyone working in the area
Own rescue unit
  • * Certified ISO 45001

Key Figures

  • Average training days: 0.5
  • Sickness absences (excluding contractors): 3,75 %
  • Accident frequency: Nordkalk own personell 0,8, contractors 1,5
  • Shift systems in use: Päivätyö (työaikajoustot: liukuva työaika ja joustotyöaika), kaksivuorotyö, keskeytymätön kaksivuorotyö, keskeytyvä kolmivuorotyö sekä keskeytymätön kolmivuorotyö
  • Share of women in the labour force: 19%

Impact on the use and livelihoods of nearby areas

Impact on local livelihoods:

Mining employs local people both directly and indirectly, either as contractors or as service providers. Business activities are carried out in connection with the mines, utilizing old mining facilities, for example, museum and restaurant operations, and the development of elevator technology. Tytyri mine provides raw water for drinking water to the local community. The operations have continued for over 100 years, so the mining areas have adapted to be part of the local community.

Impact on nearby recreational use:

During quarrying or kiln operations, there are impacts on local communities, such as noise, dust, vibrations, local emissions, and traffic loads. Although these impacts cannot be completely eliminated, they have been managed through environmental permit processes (including regular authority audits and reporting), the ISO 14001 certified Management System, a constant self-monitoring and continuous improvement process. Measures aimed at reducing the impacts of our operations include e.g. installing dust filters and ensuring their good condition, improving the blasting plan and dust control measures. The company has renovated the viewpoint and fitness stairs in Pargas and enabled the operation of the mining museum in Lohja.

Impact on landscape value:

Impacts on the landscape have been taken into account in the company’s activities. Material efficiency and resource consciousness have been our focus areas for quite a while. We continue to improve the material efficiency of our operations in order to avoid putting material in waste areas. Waste areas are landscaped during mining lifetime according to environmental permit conditions. Per request of authorities some areas are left without landscaping in order to provide favourable conditions for lime loving species.

Interaction with stakeholders

Stakeholder cooperation:

  • Ongoing stakeholder engagement with diverse stakeholder groups through several communication channels.
  • Transparent communication via our website, social media platforms, local newspapers, Nordkalk’s Sustainability Report, letters and community events such as open house days at our sites.
  • Opportunities for young people through summer employment, internships, and educational visits for school pupils and students.
  • Sponsorships and local support initiatives to contribute to the well-being of local communities.
  • Support for organizations and initiatives dedicated to improving children’s welfare and development

Research and cooperation projects:

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