Macromin Kentish Minerals (MKM) Logo
MKM Sharpness Docks Packing Plant

The UK's Leading Supplier of Bentonites & Absorbent Minerals

  • Huge range - powders, granules & pellets.
  • For all end uses & industries.
  • Packed & bulk, nationwide & internationally.
Workers mixing bentonite powder to create drilling fluid for civil engineering project
Years of Industry Expertise

MKM supplies high-performance bentonite, absorbent materials, industrial minerals, and eco-friendly cat litter to civil, environmental, and wholesale retail clients. All of our products are sourced from quality-assured manufacturers, and we work closely with suppliers through regular site visits to ensure consistent quality and strong commercial terms.

From the Channel Tunnel to Crossrail, and from UK supermarkets to global clients, our materials are trusted in critical applications where quality and supply matter most.

What We Supply

We supply a focused range of natural clays and mineral-based materials - including bentonites, drilling blends, and absorbent minerals — available in powder, granular, and pelletised forms.
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Bentonites

Sodium and calcium bentonites for civil engineering, tunnelling and sealing applications. Available in powder or granular form.

Bentonite-Cement Blends

Customisable blends including our flagship KM READIGROUT product. We offer tailored bentonite-cement mixtures to meet the specific requirements of your project.

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Industrial Minerals

A selection of specialist minerals including titanium dioxide and calcium silicate for construction and manufacturing.

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Cat Litter

Eco-friendly clumping bentonite litter, supplied in bulk to leading supermarkets and distributors.

Sectors We Supply

MKM’s mineral-based products are trusted across a wide range of applications - from tunnelling and landfill sealing to pet care and industrial manufacturing.

Civil & Environmental Engineering

  • Tunnelling & directional drilling (HDD)

  • Diaphragm and slurry walls

  • Borehole & well sealing

  • Landfill lining (BES liners)

Environmental Protection

  • Soil remediation

  • Void filling

  • Contaminant binding (bentonite + zeolite)

Wholesale Retail

  • Bulk cat litter supply

Industrial Use

  • Coatings & inks

  • Plastics & rubber

  • Paper & laminates

On-site viscosity test of bentonite drilling slurry using a Marsh funnel, with construction workers handling the mix
Ultra clumping bentonite – high-performance absorbent material ideal for cat litter manufacturers and retailers.
Heavy machinery operating at a mineral processing quarry during sunset, loading bulk industrial materials

Ready to Discuss Your Needs?

Whether you're sourcing specialist bentonites or industrial minerals, we're here to help