LSE-listed Blencowe Resources says graphite concentrate from its Orom-Cross project, in Uganda, has been used in a rocket component testing programme in the US, with the initial test firing successfully completed and early observations indicating encouraging performance in high-temperature applications.

"These latest tests are an encouraging validation step to highlight the importance of high-quality graphite in specialist defence, aerospace and energy applications," says Blencowe executive chairperson Cameron Pearce.

Manufacturer of mouldings for use in rocket propulsion nozzles American Energy Technologies Company (AETC) used the graphite concentrate provided by Blencowe to evaluate the replacement of a percentage of the synthetic graphite typically used in such components and to assess the suitability of Orom-Cross material in high-temperature environments.

A recent test firing programme was attended by representatives from Pluto Aerospace, Purdue University and various US government agencies alongside Blencowe COO Iain Wearing.

The testing application was conducted with Pluto Aerospace on its hypersonic suborbital rocket platform in the initial programme. The programme successfully completed the planned test runs, and data is now being analysed by the parties involved.

"Demonstrating performance in live rocket test conditions with various US government agencies in attendance showcases Orom-Cross graphite at the highest levels.

"With further testing phases planned, including orbital testing expected in the latter half of 2026, we believe this supports higher-value offtake pathways beyond standard concentrate sales. These all help to continuously add more value to our overall Orom-Cross strategy and our commercial model," says Pearce.

In parallel, AETC has also been testing graphite-based coatings applied to rocket fin components to evaluate durability under hypersonic conditions and icephobic properties – surfaces designed to repel ice, prevent ice formation or significantly reduce ice adhesion – with potential applicability across military and civilian aircraft environments.  

While the recorded data remains under analysis, initial observational performance has been encouraging, says Blencowe.