Boss Energy Welcomes enCore Plans to Expand Alta Mesa Uranium Project

Boss Energy (ASX: BOE) has welcomed news that its joint venture (JV) partner enCore Energy is moving to expand the Alta Mesa uranium project in Texas, USA.

enCore now plans to significantly expand the project by adding 5,900 acres of land immediately adjacent to the Alta Mesa wellfields and central processing plant (CPP).

Boss owns 30% of Alta Mesa and receives the same amount of the mine’s uranium production, with enCore as 70% owner and operator—the same structure the JV will apply over the new Tacubaya project land.

Increased Mine Life

The strategic acquisition of the Tacubaya land – which features the same uranium mineralisation style as the current Alta Mesa acreage – should provide additional feed and increase the life of the project.

Chevron Minerals initially identified Tacubaya’s potential when it discovered multiple uranium roll fronts at various depths during historical drilling in late 1970s, with a number of units identified at that time formerly or currently productive at Alta Mesa.

enCore has additional exploration planned to fully explore and delineate the uranium mineralisation on the new Tacubaya land.

Two rigs will commence the first stage of a 200-hole exploration campaign across two key areas in mid-October 2025, and enCore plans to bring in two additional rigs at a later stage.

‘Key Acquisition’

“The compelling geology and location, immediately adjacent to, and on-trend with, our active and past wellfields make this a key acquisition for enCore,” enCore executive chair William Sheriff said.

The Alta Mesa CPP currently has the capacity to process 1.5 million pounds of uranium per year, with additional drying capacity of 0.5Mlb.

Alta Mesa is part of Boss Energy’s growing global uranium portfolio alongside the Honeymoon project in South Australia, where it also continues to ramp up production and output.

The company recently reported strong quarterly growth at Honeymoon, with an 18% increase to 53,000lb U3O8 drummed and a 60% jump in production to 149,000lb.