A French Orano SA could lose the right to mine uranium at one of the largest deposits in the world by June 19 after Niger rejected the French nuclear company’s plan for developing the asset, according to Bloomberg, Report informs via Energy Connects.

Orano continues to operate a single large uranium mine in Niger but its proposed plan for the development of the Imouraren deposit “doesn’t meet the authorities’ expectations,” Niger’s mining ministry said in a letter seen by Bloomberg. A junta spokesman confirmed the letter dated June 11.