Cleveland Potash Ltd


Cleveland Potash, a business unit of ICL Fertilizers, is a producer and supplier of potash fertilizers for agriculture and industry uses. Cleveland Potash operates the United Kingdom's only potash mine, from which we produce over a million tons of potash for fertilizers and more than half a million tons of salt each year. 

Customers use our high-quality potash products for fertilizer production, as well as for glass making and applications in the chemical and pharmaceutical industries. Cleveland's salt products also meet a variety of needs, from road maintenance to sugar beet cultivation and as an ingredient in animal feeds.

All from a single source


ICL Fertilizers, one of the world's largest fertilizer companies, provides end-users and manufacturers on five continents with a wide range of high-performance solutions – all from a single source. 

  • Potash
  • Phosphoric acid
  • Specialty fertilizers
  • Phosphate rock
  • Compound fertilizers
  • Feed additives

Our growing global family of integrated businesses ensures that our customers receive the highest quality, competitive pricing and responsive sales and support. 

  • ICL Fertilizers Europe C.V.
  • ICL Fertilizers Deutschland GmbH
  • Cleveland Potash
  • Dead Sea Works
  • Fertilizers & Chemicals
  • ICL Fertilizers Europe
  • Iberpotash
  • Mifalei Tovala
  • ICL Specialty Fertilizers
  • Rotem Amfert Negev
  • Rotem Turkey

Each year ICL Fertilizers produces approximately 5 million tonnes of potash at Dead Sea Works, Israel; Iberpotash, Spain; and at Cleveland Potash, UK. The 4 million tonnes of rock phosphate mined at the Zin, Arad and Oron mines in Israel are used for the production of 1.7 million tonnes of granular fertilizers and 550,000 tonnes P2O5  of phosphoric acid. ICL Fertilizers' phosphate mining operations in Israel, along with its fertilizer production facilities at Rotem, Israel, ICL Fertilizers Deutschland GmbH and at ICL Fertilizers Europe C.V., creates a wide array of phosphate fertilizers.

Together, we provide a range of products for upgrading essential plant nutrients. These include Phosphorus, Potassium, Magnesium and Sulfur, combined with micronutrients and applied directly, through irrigation systems or by spraying plant foliage. Our fertilizers, applied directly to the soil or through sophisticated irrigation systems or foliar application, are the basis for thriving, advanced agriculture.

ICL Fertilizers offers also specialty fertilizers for the growing modern agricultural arena, like drip irrigation, greenhouses, etc. Our soluble fertilizers are responding to the need of higher yields and better quality per cultivated land and to the growing scarce of water and arable land. These specialties are marketed by ICL Specialty Fertilizers.

Giving back to the community is another well-defined goal of our company, resulting in the sponsorship of various educational and cultural projects. Sharing and integration -you might say it's just our nature.

All from a single source

Fertilizers are Plant Nutrients



Fertilizers contains the nutrients that are essential to plant growth and development. With these nutrients, plants produce the food that animals and human beings eat.

Plants require 16 nutrient elements which are essential for completion of the life cycle. Carbon (C), hydrogen (H) and oxygen (O) are derived from air (carbon dioxide, CO2) and water. Nitrogen (N), phosphorus (P), potassium (K), sulphur (S), calcium (Ca), magnesium (Mg), boron (B), chloride (Cl), copper (Cu), iron (Fe), manganese (Mn), molybdenum (Mo) and zinc (Zn) are mineral nutrients that are normally derived from the soil in the form of inorganic salts.

The absence or low availability of these nutrients results in death of the plant, or poor growth that is generally accompanied by visual deficiency symptoms. The nutrients must be provided by the soil, manures and/or mineral fertilizer. The nutrients are primarily taken up by the roots as ions that exist in the soil solution.

Nutrients classification


Nitrogen is an important component of many important structural, genetic and metabolic compounds in plant cells. It is an elementary constituent of numerous organic compounds of general importance, such as amino acids, proteins, nucleic acids, enzymes and the chlorophyll molecule.

Phosphorus (P) is an essential nutrient, both as a part of several key plant structural compounds and as a catalyst in the conversion of numerous key biochemical reactions in plants. Phosphorus is noted especially for its role in capturing and converting the sun's energy into useful plant compounds.

Potassium (K), along with nitrogen and phosphorus, is one of the three essential plant macronutrients, and is taken up by plants from the soil in relatively large amounts. Potassium increases yield and maintains the quality of agricultural produce, enhances the ability of plants to resist diseases, insect attacks, cold and drought stresses, and other adverse conditions.

Magnesium (Mg) is required by all crops to enable them to use photosynthesis to capture the sun's energy for growth and production. Photosynthesis occurs in chlorophyll, the green pigment in plants, and magnesium is the central atom of the chlorophyll molecule, and each molecule contains 6.7% magnesium.

Sulfur (S) is an essential element in forming proteins, enzymes, vitamins, and chlorophyll in plants, and in nodule development in legumes. Protein synthesis requires large amounts of sulfur, which also plays an important role in the formation of oils within the seed.

Chloride (Cl) is an essential micronutrient that serves as a key osmotic regulator in the plant, being responsible for the hydration and turgor of the plant cells. It aids the movement of water into cells and promotes the ability of cells to retain water, which is especially important when plants are under moisture stress.

Micronutrients are elements which are essential for plant growth, but are required in much smaller amounts than nitrogen, phosphorus and potassium. The micronutrients are boron (B), copper (Cu), iron (Fe), manganese (Mn), molybdenum (Mo), zinc (Zn), and chloride (Cl).

Fertilizers are Plant Nutrients

ISO Certificates

ISO 9001:2000

Cleveland Potash operates a quality management system which complies with the requirements of BS EN ISO 9001:2000 for the processing of mined ore into potassium products for agricultural and industrial applications.

ISO 14001

In August 2000, Cleveland Potash Ltd was awarded 14001:2004 for their environmental management system, which covers surface operations at Boulby Mine including the tailings facility, the outfall and the railway line which runs from the mine to nearby Carlin Howe. 

BS OHSAS 18001:2007 Occupational Health & Safety Management System

In November 2009, Cleveland Potash was successfully certified to BS OHSAS 18001:2007 Occupational Health & Safety Management System covering the activities of Cleveland Potash Limited inclusive of Underground, Surface, Tees Dock and Administration.

It formalizes procedures and allows CPL to consistently identify and control its health and safety risks, reduce potential for accidents, aid legislative compliance and improve overall safety performance for employees, customers and general public.

ISO Certificates

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