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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryIndustryGlass, Ceramics, Stone & Construction Materials IndustryBirmenstorf AgRMK Kies AG
RMK Kies AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

RMK Kies AG operates the Grosszelg project for the extraction and processing of gravel and sand to supply aggregates for the construction sector. The project foresees staged extraction with planned backfilling and recultivation, local processing, traffic access arrangements and measures to control emissions and noise. RMK Kies is an interest group composed of the regional companies Merz, Knecht and Richi.

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Products & services

Industry:Glass, Ceramics, Stone & Construction Materials IndustryWholesale - Construction & Raw Materials
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3.6/5

RMK Kies AG

✓ Offered6
Gravel extraction
Gravel extraction in the Grosszelg area in Birmenstorf, with planned output of around 145'000 m³ per year, phased over five sections and followed by backfilling.
Sand extraction
Sand extraction as part of the material extraction in the Grosszelg project, complementing the gravel extraction and serving regional supply of building materials.
Backfilling and land reclamation
Backfilling with clean excavated material, land reclamation of the extraction areas and gradual return to agriculture.
Regional supply of gravel and excavated material storage
Ensuring regional supply of gravel as well as backfill volumes for unpolluted excavated material in the Baden–Brugg–Limmattal area.
Ecological compensation
Ecological compensation measures during extraction, including connecting habitats, wildflower strips, field margins and biodiversity promotion areas.
Planning and access development for material extraction sites
Planning of phasing, transport access, infrastructure and emission reduction measures for the Grosszelg extraction area.
Trust & reputation

ranQ Trust Score of RMK Kies AG: 3.6 out of 5.0

Trust Score3.6/ 5.0

Solid

x

Data basis 58% · As of October 2026

RMK Kies AG has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
x
CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
RMK Kies AG scores 53.4 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.25.012%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.55.07%
RMK Kies AG scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).85.022%
RMK Kies AG scores 11.5 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.22.94%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.0.04%
Qualifications+0.00

RMK Kies AG reaches a ranQ Trust Score of 3.6 out of 5.0 — rated «Solid». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 58%, so the score is backed by part of the criteria. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Press

Media

June 17, 2025Media
Kritische Fragen zum Kiesabbau gestellt
reussbote.ch
June 13, 2025Media
Birmenstorf: Baugesuch zum Kiesabbau im Grosszelg liegt öffentlich auf
badenertagblatt.ch
March 18, 2023Media
«Hatte einige schlaflose Nächte»: Nach dem Ja zum Kiesabbau im Grosszelg spricht der Betreiber
badenertagblatt.ch

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Location

Niderhardweg 1
5413 Birmenstorf Ag

At a glance

Legal form
Corporation
UID
CHE-366.196.705
Founded
2025 · 1 year
Last commercial register change
May 1, 2025
Employees
1 to 10
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
100.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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