Hawthorne Army Depot (HWAD) is a U.S. Army ammunition storage depot located near the town of Hawthorne in western Nevada in the United States. It is directly south of Walker Lake. The depot covers 147,000 acres (59,000 ha) or 226 sq. mi. and has 600,000 square feet (56,000 m2) storage space in 2,427 bunkers. HWAD is the "Worlds Largest Depot" and is divided into three ammunition storage and production areas, plus an industrial area housing command headquarters, facilities engineering shops, etc.
Hawthorne Army Depot stores reserve ammunitions to be used after the first 30 days of a major conflict. As such, it is only partially staffed during peacetime, but provision has been made to rapidly expand staffing as necessary. The depot is run by an independent contractor under an agreement with the government.
Capabilities of the center include: demilitarization, desert training for military units, ammunition renovation, quality assurance, ISO intermodal container maintenance/repair, and range scrap processing.
The Naval Ammunition Depot Hawthorne was established in September 1930. It was redesignated Hawthorne Army Ammunition Plant in 1977 when it transferred to Army control as part of the Single Manager for Conventional Ammunition. In 1994, it ended its production mission and became Hawthorne Army Depot.
The depot began its existence as the Hawthorne Naval Ammunition Depot (NAD). It was established after a major disaster occurred at the Lake Denmark Naval Ammunition Depot, in New Jersey, in 1926. The accident virtually destroyed the depot, causing heavy damage to adjacent Picatinny Arsenal and the surrounding communities, killing 21 people, and seriously injuring 53 others. The monetary loss to the Navy alone was $84 million, just over $1 billion today (mostly in consumed explosives). As a result of a full-scale Congressional investigation, the seventieth Congress in 1928 directed the establishment of a Board of Officers to provide oversight of the storage conditions of explosives. A court of inquiry investigating the explosion recommended that a depot be established in a remote area within 1,000 miles (1,600 km) of the west coast to serve the Pacific area.