Brønnøy Kalk AS

What Brønnøy Kalk AS does

Brønnøy Kalk AS is a Norwegian limestone and marble mining company that has operated the Akselberg deposit in Velfjord, Nordland since 1997. The company extracts calcspar marble — a high-quality calcium carbonate (CaCO₃) raw material — and ships crushed stone to Omya Hustadmarmor AS in Elnesvågen, where it is micronized and converted into Hydrocarb (liquid marble) used as a filler and coating in paper production. Brønnøy Kalk's deposit includes three quality categories of marble (spotted, banded, and impure), and its limestone is found in 15-20% of regular copy paper and up to 50% of magazine paper by weight. The company operates with a 100-year planning horizon and has comprehensive environmental monitoring including water quality, air particle measurement via NILU, noise measurement per Norsk Standard, sedimentation basins, and revegetation programs.

The business model is a B2B raw materials supplier relationship: Brønnøy Kalk is the main (and effectively sole) supplier of raw calcium carbonate to Omya Hustadmarmor AS under a sales-led, direct enterprise supply arrangement. Revenue mechanics are not publicly disclosed, and pricing is not transparent. The company has only 14 employees and operates as a wholly-owned subsidiary of Norsk Mineral AS, a family-owned Norwegian conglomerate with roots in the mineral industry dating to 1948 and operations spanning mining, mineral processing (25% of group business), renewable energy, real estate, and finance. Brønnøy Kalk positions itself as a cornerstone business in Brønnøy municipality with values centered on sustainable, long-term operations.

The company distinguishes itself through domain specialization in a unique geological deposit, a long-standing exclusive supply relationship with its anchor customer, and early adoption of autonomous haul trucks in partnership with Volvo Trucks — making it the first mine in the world to operate autonomous vehicles commercially under the banner of 'The Brønnøy Solution.' It is currently pursuing quarry expansion through area planning in cooperation with Asplan Viak and Brønnøy Municipality.

Name

Brønnøy Kalk AS

Legal name

Brønnøy Kalk AS

Website

https://bronnoykalk.no

Company type

Private

Founded year

1997

Operating status

Operating

Headcount range

11–50 employees

Short description

Brønnøy Kalk AS operates a limestone and marble mine at Akselberg in Velfjord, Norway, supplying raw calcium carbonate to Omya Hustadmarmor AS for use in paper production. A 14-employee subsidiary of family-owned Norsk Mineral AS, it serves as the main raw material supplier for Hydrocarb (liquid marble) used in copy and magazine paper.

Ownership category

akta.pro rank

Product category

Industrial Minerals Mining

NAICS

Crushed and Broken Limestone Mining and Quarrying (212312), Stone Mining and Quarrying (21231)

SIC

Mining & Quarrying Of Nonmetallic Minerals (No Fuels) (1400)

akta.pro primary industry

Limestone Quarrying (Industrial & Construction Grade) (IMAKAHAC)

akta.pro secondary industry

Calcium Carbonate (GCC/PCC) (IMAEAFAA)

Keywords

• Limestone mining
• Calcium carbonate production
• Industrial mineral processing
• Raw material supply
• Mineral quarrying

Headquarters

HQ city

Molde

HQ country

Norway

HQ region

Europe

Offices4 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Operations, Personnel, Infrastructure, Supply Chain, Technology or R&D

Revenue model

1. Raw Materials Supply - Calcium Carbonate: Brønnøy Kalk mines limestone marble at Akselberg and supplies raw calcium carbonate to Omya Hustadmarmor AS. The limestone is crushed in two stages and shipped to Elnesvågen where it is processed into Hydrocarb (liquid marble) for paper production. Regular copy paper contains 15-20% calcium carbonate, while magazine paper can contain up to 50%.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels2 records

Core offering

Brønnøy Kalk AS mines and processes calcium carbonate (CaCO3) limestone marble from the Akselberg deposit in Velfjord, Norway. The company serves as the main supplier of raw materials to Omya Hustadmarmor AS, which converts the limestone into Hydrocarb (liquid marble) used as filler and coating in paper production. Regular copy paper contains 15-20% calcium carbonate, while magazine paper can contain up to 50% by weight.

Product overview

Brønnøy Kalk AS operates as a mining and raw materials company within the Norsk Mineral AS conglomerate. The company's core business centers on extracting limestone marble from the Akselberg deposit in Velfjorden and processing it into calcium carbonate products for the paper industry. Their primary product is Hydrocarb (liquid marble), which is shipped to Omya Hustadmarmor AS in Elnesvågen where it is micronized and converted to liquid form for use in paper manufacturing. The company positions itself as a cornerstone business in Brønnøy with a 100-year perspective, emphasizing sustainable operations and environmental responsibility in its mining activities.

Differentiator

Problem solved

Functional benefit

Products and services

• Hydrocarb (Flytende marmor / Liquid Marble) Micronized calcium carbonate product converted to liquid form from Brønnøy Kalk's limestone marble, used as filler and coating material in paper production. Regular copy paper contains 15-20% calcium carbonate; magazine paper can contain up to 50% by weight.
• Kalkmarmor (Limestone Marble) Raw limestone marble mined at the Akselberg deposit, crushed in two stages and shipped to Elnesvågen for downstream processing into Hydrocarb (liquid marble) at Omya Hustadmarmor AS. The deposit consists of calcspar marble with three quality categories: Spotted marble (with characteristic black graphite dots), Banded marble (alternating light and dark layers), and Impure marble (high silicate content, not usable for production).
• Kalkstein til papirproduksjon (Calcium Carbonate for Paper Production) Calcium carbonate raw material that makes paper white and opaque, improves print properties, prevents yellowing and brittleness. Delivers a major environmental benefit: 1,000 kWh of energy is saved per ton of cellulose replaced with Hydrocarb in paper production.

Quantifiable outcome

• 1,000 kWh saved per ton of cellulose replaced with Hydrocarb

Named customers1 record

Segments1 record

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Five partnerships are on record, tiered minor, core and flagship.

• Asplan ViakminorImplementation/ SI/ Consulting Partner · 10 March 2026Planning and consulting partner for area planning work for the Akselberg limestone quarry expansion.
• Brønnøy MunicipalityminorStrategic or Co-development Partner · 10 March 2026Municipal cooperation for area planning of the Akselberg quarry. The municipality is involved in the formal participation process for area regulation planning.
• Omya Hustadmarmor AScoreStrategic or Co-development PartnerMain customer relationship - Brønnøy Kalk is the main supplier of raw materials to Omya Hustadmarmor AS. The limestone marble from Velfjord is processed into Hydrocarb (liquid marble) used in paper production.
• Norsk Mineral AScoreOthersParent company - Brønnøy Kalk AS is a wholly owned subsidiary of Norsk Mineral AS, a family-owned company with roots in the mineral industry dating back to 1948. Norsk Mineral operates in mining, mineral processing (25% of business), renewable energy, real estate, and finance.
• Volvo TrucksflagshipStrategic or Co-development PartnerAutonomous vehicle partnership - Brønnøy Kalk is the first mine in the world to work with Volvo Trucks to implement autonomous vehicles in commercial operations, called 'The Brønnøy Solution'. Machine operators will collaborate with driverless trucks and use modern data equipment.

Scale indicators4 records

Recent moves4 records

Expansion highlights4 records

Market position

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/br%C3%B8nn%C3%B8y-kalk-as

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Brønnøy Kalk AS