Work at Underground Test Site a New Indicator of Possible Strikes on Iran’s Pickaxe Mountain Bunker
11th September 2026
Work at a specialized underground weapons test site in New Mexico, contracted earlier this year, was linked to planning for a potential new operation targeting Iranian nuclear facilities, according to a report from CNN. The U.S. military has notably left Iran’s hardest-to-reach site under Pickaxe Mountain untouched so far, but President Donald Trump and other U.S. officials have been openly talking about striking it.
On February 27, the day before U.S. and Israeli forces launched their initial wave of strikes on Iran, the Pentagon’s Defense Threat Reduction Agency (DTRA) quietly announced it had awarded a sole-source deal to Pate Construction Co., Inc., for new construction at the so-called Alternate Seismic Hardrock in Situ Test (ALT-SHIST) site. The work was needed to support an upcoming classified live-fire test. ALT-SHIST is situated within the White Sands Missile Range (WSMR), a sprawling U.S. Army-managed complex in New Mexico’s Jornada del Muerto desert basin. DTRA is a relatively small and obscure organization that plays a leading role in U.S. military efforts to develop new and improved ways to respond to Weapons of Mass Destruction (WMD) threats.
WSMR and DTRA have come up in discussions about strikes on Iran in the past. The U.S. military’s heaviest conventional air-dropped weapon, the 30,000-pound-class GBU-57/B Massive Ordnance Penetrator (MOP) bunker buster bomb, has been extensively tested at multiple sites there in the past. DTRA was also directly involved in its initial development. MOPs made their combat debut during U.S. strikes last year on underground Iranian nuclear facilities at Fordow and Natanz as part of Operation Midnight Hammer. The possibility has been raised that a different site within WSMR may have been used to test the plan of attack against Fordow, which involved two ventilation shafts being hit with six GBU-57/Bs each. The bombs were dropped in rapid succession, with each one burrowing deeper and deeper into the facility below. WSMR also happens to contain the site of the first atomic bomb test in 1945.