Market and product

Compiled by Bao Hien

A mining company has announced exploration drilling results indicating a very high-grade potash deposit in Utah, USA. The discovery comes at a time when the resilience of the US potash supply chain is being called into question amid trade tensions with Canada, which accounts for nearly three-quarters of domestic consumption.

Drilling Results: Grades Far Exceed Industry Averages

The Peterson 1 drill hole at the Sage Plain project, completed in early August 2026, returned notable results. The upper potash bed contained a 3.3-metre interval grading 52.5% KCl (potassium chloride), alongside a thicker interval of 8.1 metres grading 36.1% KCl. The lower bed delivered comparable results, with a 3.1-metre interval grading 53.4% KCl and a 5-metre interval grading 36.4% KCl. Across the entire mineralized sequence, the results showed a continuous interval of 13.1 metres grading 36.3% KCl.

For comparison, KCl grades in commercial potash deposits worldwide typically range from 20% to 30%. Grades exceeding 50% in the richest intervals are therefore considered exceptionally high by industry standards. The ore also contains very low levels of carnallite, another potassium-magnesium mineral that is generally more difficult to process, while insoluble impurities account for less than 1%. Both characteristics are favorable for downstream processing. Geologically, the deposit dips at a very shallow angle of approximately 0.8 degrees and remains open in all directions, indicating potential for resource expansion through further drilling.

From Preliminary Economic Assessment to Production Expansion Targets

Before these latest drilling results, the project had completed a Preliminary Economic Assessment (PEA), estimating an after-tax net present value (NPV) of US$502 million and an internal rate of return (IRR) of 39%. These indicators point to relatively favorable economic prospects at the preliminary assessment stage. The Peterson 1 results are expected to help upgrade part of the resource into the “measured and indicated” categories, which carry a higher level of geological confidence. They are also expected to support a target of increasing mine capacity to more than 300,000 tonnes per year, above the production figure outlined in the previously published PEA.

Background: Canada Supplies Nearly 73% of US Potash Consumption

The discovery is particularly significant given the current structure of the US potash supply chain. According to industry data, Canada supplies approximately 73% of the potash consumed in the United States, primarily from large-scale salt deposits in Saskatchewan. These operations benefit from a rail network providing direct connectivity to US markets, a major logistical advantage over imports that must be transported by sea. Russia contributes a further 11%, while domestic US production accounts for only about 8% of total consumption. Overall, the United States relies on foreign sources for as much as 92% of its potash supply.

This dependence has become more concerning as US-Canada trade tensions escalated in 2026. In mid-August, the United States imposed 50% tariffs on approximately US$20 billion worth of Canadian imports following the collapse of trade negotiations. Canada retaliated with reciprocal tariffs ranging from 15% to 50% on US goods, effective September 8. Although potash was initially exempted from the tariff list, analysts continue to warn of potential risks. If Canadian supplies were disrupted, the United States might have to turn to Russia and Belarus, both subject to international sanctions, further complicating foreign policy considerations.

The Impact on Farmers Is Already Emerging

Fertilizer cost pressures had begun to emerge even before trade tensions intensified. A Farm Bureau survey conducted in April 2026 found that 70% of US farmers said they could not afford to purchase all the fertilizer they needed for spring planting. Agricultural experts note that farmers may temporarily reduce potash applications by relying on existing soil reserves. However, this is only a short-term measure. If potash prices continue to rise as a result of prolonged trade disputes, some of the additional costs will eventually be passed on to consumers through higher retail food prices.

Why a Domestic Discovery Cannot Immediately Resolve Import Dependence

Although the Utah discovery is an encouraging development in efforts to diversify domestic supply, industry observers point to a practical constraint: current US potash production capacity is extremely limited, and bringing new production to commercial scale typically takes more than a decade from exploration to stable operations. As a result, the discovery is unlikely to provide a short-term substitute for Canadian supplies.

It should therefore be viewed as part of a long-term strategy to diversify potash sources rather than an immediate solution to the current risk of trade-related supply disruptions.