US Tests Deep-Penetration Munitions in New Mexico as Iran Fortifies Pickaxe Mountain

Key points

• The Defense Threat Reduction Awarded a sole-source contract to Pate Construction in late February 2026 for emergency repairs and testing preparations at the ALT-SHIST site in White Sands Missile Range, New Mexico.
• CNN sources confirm the testing was linked to the Iran war, specifically aimed at validating capabilities to strike deeply buried underground facilities like Pickaxe Mountain, which was spared during the June 2025 Operation Midnight Hammer.
• CSIS analysis of satellite imagery shows a 'clear surge' in construction at Pickaxe Mountain in 2026, including road paving and portal hardening, though the site is not yet capable of uranium enrichment.
• President Trump has repeatedly threatened to strike Pickaxe Mountain, citing surveillance of the site, while noting that the U.S.-Iran conflict may not end until after the November 2026 midterm elections.
• The U.S. is developing the GBU-76/B Next Generation Penetrator to succeed the current GBU-57/B Massive Ordnance Penetrator, as current munitions may lack the depth-penetration required to destroy the granite-buried Iranian facility.

Background

This development follows the June 2025 Operation Midnight Hammer, where U.S. forces struck the Fordow and Natanz nuclear facilities but left Pickaxe Mountain untouched due to its extreme depth. In July 2026, a rift emerged between Trump and Netanyahu regarding the site, with Trump preferring diplomacy. Recent weeks have seen escalating tensions, including tanker attacks in the Strait of Hormuz and Houthi advances in Yemen, which have driven oil prices above $100 per barrel.

How outlets are covering it

CNN and The War Zone emphasize the direct link between the New Mexico testing and the strategic need to strike Pickaxe Mountain, citing sources that the tests were 'connected to the Iran war.' CNBC focuses on the diplomatic and economic fallout, highlighting Trump's warnings to Iran and the impact on oil markets. France 24 provides broader regional context, noting the escalation in Yemen and the Strait of Hormuz, which complicates the U.S. military's operational environment. While all outlets agree on the surge in Iranian construction, CSIS analysts caution that the site is not yet operational for enrichment, a nuance less emphasized in the more urgent reporting of CNN and CNBC.

Why it matters

The U.S. is actively closing the capability gap that prevented the destruction of Iran’s deepest nuclear facilities in 2025. If the new testing at White Sands validates effective strike methods, it could alter the strategic balance in the ongoing U.S.-Iran conflict, potentially leading to a direct attack on Pickaxe Mountain. This would significantly impact global energy markets and the trajectory of the six-month war, which Trump has linked to the upcoming midterm elections.

What to watch

Watch for official U.S. confirmation of the live-fire tests at ALT-SHIST and any subsequent announcements regarding the deployment of the GBU-76/B Next Generation Penetrator. Monitor satellite imagery for further changes at Pickaxe Mountain, particularly regarding the installation of centrifuges or other enrichment equipment. Observe Trump’s rhetoric in the lead-up to the November 2026 midterms, as he has tied the end of the war to the election outcome.