. A major disaster occurred at the
United States Navy's
Lake Denmark Naval Ammunition Depot in
New Jersey in 1926. The accident virtually destroyed the depot, causing heavy damage to the adjacent
Picatinny Arsenal and the surrounding communities, killing 21 people and seriously injuring 53 others. The monetary loss to the Navy alone was
US$84 million, the equivalent of just over US$1 billion in 2007, mostly in due to the loss of explosives consumed in the disaster. As a result of a full-scale
United States Congressional investigation, the
70th United States Congress in 1928 directed that a Board of Officers be established 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 of the
United States West Coast to serve the
Pacific area. In accordance with the court of inquiry's recommendation, construction of the
Hawthorne Naval Ammunition Depot (NAD) began in July 1928 in a area of Nevada under U.S. Navy jurisdiction. The Hawthorne NAD opened in September 1930 and received its first shipment of high explosives on 19 October 1930. When the United States entered
World War II in December 1941, the depot became the staging area for
bombs,
rockets, and
ammunition for almost the entire war effort. Employment was at its highest at 5,625 in 1945. By 1948, the Hawhorne NAD occupied about of the area. Subsequently, excess U.S. Navy lands were turned over to the
United States Department of the Interior's
Bureau of Land Management. The mission and functions at the Hawthorne NAD remained the same throughout the facility's history. The mission, as stated in a 1962 Navy Command History, was to "receive, renovate, maintain, store and issue ammunition, explosives, expendable ordnance items and/or weapons and technical ordnance material and perform additional tasks as directed by the
Bureau of Naval Weapons." It also served as an important ammunition center during the
Korean War (June 1950–July 1953) and the
Vietnam War (1964–1973), with several thousand structures on of land. Stored ammunition that had been examined and repacked was given the code "HAW" followed by the last two digits of the year (e.g., "HAW 50" in 1950). The
United States Marine Corps provided security for the 3,000 bunkers at Hawthorne NAD. In September 1930 and during World War II (December 1941–August 1945) 600 Marines were assigned to the facility. By 1977, that number had dropped to 117. In 1977, NAD was transferred to the
United States Army and renamed the
Hawthorne Army Ammunition Plant (HWAAP). In 1980, the HWAAP was redesignated as a
United States Government-owned contractor-operated facility.
Day & Zimmermann Hawthorne Corporation (DZHC) is the current operating contractor, having won the contract over three other bidders, namely
Aerojet Services,
Mason & Knight, and the British-owned
ICI America, by proposing the lowest price for the plant's operation. The award was announced on 5 August 1980. In 1994, the facility was renamed the
Hawthorne Army Depot (HWAD). Security is contracted to a private company. In 1998–1999, the facility was used to destroy the U.S. stockpile of
M687 chemical artillery shells and separate their of binary precursor chemicals from them. In May 2005, the facility was included on the 2005
Base Realignment and Closure (BRAC) list, with closure being recommended. However, the depot was subsequently dropped from the BRAC list, primarily due to the base's capability to support pre-deployment training for
Operation Enduring Freedom-bound U.S. Marine Corps units (by the
Mountain Warfare Training Center) as well as Navy and Army
special operations forces. On 18 March 2013, seven U.S. Marines were killed and at least eight were wounded when a
mortar exploded during a live-fire training exercise at the Hawthorne Army Depot. Because of the accident, the
Pentagon suspended use of the
M224 mortar round pending an investigation. As a result of the investigation, the explosion was deemed to have been as a result of
human error and the suspension was lifted. Currently,
United States Marine Corps Reserve personnel from the
4th Marine Logistics Group conduct annual training exercises at the Hawthorne Army Depot as well as in its surrounding desert areas. == Local community ==