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JH Explorer in Yorkshire: Sustainable fertiliser mining

A visit to an environmentally-friendly mine development that will produce low-carbon footprint organic fertiliser leaves Portfolio Manager Tal Lomnitzer increasingly enthused about a sustainable agriculture future.

Tal Lomnitzer, CFA

Tal Lomnitzer, CFA

Senior Investment Manager


25 Jan 2024
6 minute read

Key takeaways:

  • Food systems contribute around a third of global greenhouse gas emissions, with almost 40% contributed by agricultural production.
  • The Woodsmith fertiliser mine development project is an example of a sustainable mine producing a product that has both social and environmental benefits.
  • As the world moves towards more environmentally-responsible regenerative farming the opportunities and prospects for enhanced returns for investors are growing.
The JH Explorer series follows our investment teams across the globe and shares their on-the-ground research at a country and company level.

We’re treating soil like dirt. It’s a fatal mistake, as our lives depend on it.                                                                                                                                  George Monbiot, www.theguardian.com. March 25, 2015

I have had a deep interest in soil since reading George Monbiot’s excellent book “Regenesis” which woke me up to the environmental impacts of farming, and which talks about how we can feed the world without devouring the planet. In this spirit I recently visited Anglo American’s Woodsmith fertiliser mine development project that sits within the North York Moors, a national park in Northern England.

The development is a very impressive exposition of new mining technology and is very sympathetic to the environment in this environmentally-sensitive area. According to Anglo American the project has the potential to contribute circa £1.2bn to the local economy, with the creation of more than 1500 jobs. The underground mine will barely have any surface footprint and the polyhalite ore will be transported via a 37-kilometre underground conveyor system to the processing and deep water ship loading terminal.

Backbone of the project – the 37km mineral transport shaft is the conduit from mine to port and for services into the mine

An organic fertiliser with a low-carbon footprint

Overuse of traditional chemical fertilisers can reduce soil PH (soil acidification), which reduces soil nutrients, as well as destroy beneficial soil microbes and add to greenhouse gas emissions via both fertiliser production and the release of nitrogen oxide into the atmosphere.

The fertiliser that will be produced at the Woodsmith project is derived from polyhalite, a naturally-occurring water soluble mineral. Being a multi-nutrient and low-chloride fertiliser, the ‘POLY4’ product is well suited to organic farming. There’s no chemical processing – to turn the ore into fertiliser requires only granulation through simple crushing and the addition of water and starch. This means the resulting fertiliser granules have a fraction of the carbon footprint of equivalent fertiliser blends alongside numerous benefits to soil health and farm productivity. What’s more, zero chemical use in processing means the product can be classified as organic.

The mine and processing itself has numerous attractions – almost no tailings with a 1:1 ore to product ratio, with little water and lower energy use, given the minimal processing and waste, rendering it a low operating and sustaining cost project. Mining along the thick ore body allows for more efficient bulk mining without the typical development that an underground mine requires.

View of bottom of mineral transport shaft

Multiple benefits – improved soil structure and crop yield, carbon sequestration

During my visit I met farming, agronomy and soil experts who advised me that the POLY4 product enhances soil strength and structure with increased resilience to compaction, as well as improving crop yields. This is an unappreciated environmental benefit as good soil structure improves drainage and reduces soil erosion, which mitigates floods and also supports biodiversity. Higher crop biomass can be achieved as the fertiliser adds key nutrients to the soil like potassium, sulphur, magnesium and calcium, which helps address the lower yields often associated with sustainable/organic farming given they omit chemical fertilisers and pesticides.

 

A simple product with a big role to play in sustainability

Soil is the largest store of organic carbon, containing double the amount of carbon as the atmosphere. The addition of calcium to the soil by the product is another plus as this helps soil to sequester carbon.* Soil organic carbon and carbonates are stored within soil, rocks and plants, which would otherwise have been adding to carbon dioxide in the atmosphere.

The soil is the great connector of lives, the source and destination of all. It is the healer and restorer and resurrector, by which disease passes into health, age into youth, death into life. Without proper care for it we can have no community, because without proper care for it we can have no life.

                                               Wendell Berry, The Unsettling of America: Culture and Agriculture

Challenges and opportunities in sustainable agriculture

As the world moves towards more environmentally-responsible regenerative farming practises there will be growing demand for products like this. Greenhouse gas emissions from food systems make up about a third of the global total, and of this, almost 40% is contributed by agricultural production. Governments, corporates and investors increasingly acknowledge that carbon emissions can be minimised through better management of land and improved farming practises such as precision farming, no-till farming and regenerative agriculture, including less land clearing. Fertilisers have a key role to play here, not to mention in the production of enough food to sustainably feed the almost 10 billion people on our planet expected over the next 25 years or so.

While there are multiple challenges to overcome towards a sustainable agriculture future, such as slow adoption of new farming practises and technology, reducing meat consumption and water scarcity, progress is being made. Governments are acknowledging the role of agriculture; for example, the European Green Deal (EDG) aims for the region to be climate neutral by 2050 with sustainable agriculture and food systems as a key contributor towards this goal.

My visit to the Woodsmith fertiliser mine is a good example of an innovative and proactive responsible resource company that is helping to make real change by producing a low carbon footprint product that can enhance crop yields, while also improving soil structure. Alongside that, it has the potential to deliver returns for investors and the local community, from the development of a long life, world-class operation.

*Carbon sequestration: a process whereby carbon dioxide is removed from the atmosphere and stored through biological, chemical, or physical processes. In biological carbon sequestration, CO2 is stored in vegetation eg. woodlands and forests, as well as in soils and oceans.

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Natural resources industries can be significantly affected by changes in natural resource supply and demand, energy and commodity prices, political and economic developments, environmental incidents, energy conservation and exploration projects.

Sustainable or Environmental, Social and Governance (ESG) investing considers factors beyond traditional financial analysis. This may limit available investments and cause performance and exposures to differ from, and potentially be more concentrated in certain areas than the broader market.

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