LEBANONPOST-CONFLICT ENVIRONMENTAL ASSESSMENTWeapons and ammunition used in the 2006 conflictOn 18 August 2006, the UN Mine Action Coordination Centre (UNMACC) of South <strong>Lebanon</strong>issued the following report on weapons and ammunition used during the conflict 1 :a. Aerial bombsSince hostilities began there has been an average of 200 - 300 aerial-delivered bombsdropped daily (recorded by UNIFIL) on areas adjacent to the Blue Line with at least a similarand additional amount dropped on the remainder of South <strong>Lebanon</strong>. This, coupled with theextensive bombing of areas in the southern suburbs of Beirut and Mount <strong>Lebanon</strong>, North<strong>Lebanon</strong>, [and] Bekaa Valley, amount to [a] potential and extensive threat from un-explodedhigh-explosive bombs ranging from 500 lb to 1,000 lb. In southern Beirut, where the principaltargets were supposed underground bunkers this threat may increase to bombs of 2,000lb and upwards. An average of 10 per cent of such ordnance fails to function as designedand remains in the ground as a significant explosive hazard.b. Aerial-delivered missilesAgain, there have been an average of 200 - 300 aerial-delivered missiles fired daily (recorded byUNIFIL) on areas adjacent to the Blue Line with at least a similar and additional amount fired onthe remainder of <strong>Lebanon</strong> in Beirut, Mount <strong>Lebanon</strong>, North <strong>Lebanon</strong> and the Bekaa Valley.c. Ground-launched artilleryFor the initial weeks of the conflict the Israeli Forces maintained a constant delivery ofapproximately 2,000 rounds per day fired (recorded by UNIFIL) on areas adjacent to theBlue Line with at least a similar and additional amount fired on the remainder of South<strong>Lebanon</strong>. In the last weeks immediately preceding the ceasefire this frequency increased toapproximately 6,000 rounds per day. This ordnance constitutes the biggest threat to postceasefire/cessationof hostilities humanitarian operations and, in general, consists of:1) 155 mm High Explosive rounds SP artillery (M109 Doher and Rochev)2) 105 mm High Explosive and HEAT rounds (Merkava Mk 1 & 2)3) 120 mm High Explosive and HEAT rounds (Merkava Mk 3)4) 120 mm heavy mortar5) 160 mm heavy mortar6) 81 mm medium mortar7) 60 mm light mortar8) 160 mm Light Artillery Rocket System (LAR-60): High Explosive or Cluster Munitions warhead.Each launch pod contains 13 or 18 rocket pods; each rocket contains 184 bomblets (Mk2)or 105 bomblets (Mk3) and is designed to give area coverage of 31,400 m 2 per clusterwarhead9) 227 mm M270 MLRS: M77 sub-munition system (similar to M62 or KB1)d. Naval-launched artilleryIsraeli Forces have maintained a constant delivery of approximately 100 - 200 rounds perday fired (recorded by UNIFIL) on areas throughout South <strong>Lebanon</strong>. Naval artillery was alsofired into the southern suburbs of Beirut. This ordnance also constitutes a threat to postceasefire/cessationof hostilities humanitarian operations and, in general, consists of: 76mm High Explosive rounds and Harpoon-type missiles.e. Ground-to-ground combat systemsIDF and Hezbollah have engaged in substantial ground combat operations. To date thesehave mainly been centred on the villages of Marwhin, Bint Jbeil/Marun al Ras and KafaKila/Al Taibe, Marjayoun, Al Qantara, Al Bayyada, Aadaise, and Bayt Yahun. Both sides haveused conventional small arms (up to 50 cal/14.5 mm) and light missile systems. Hezbollahis confirmed as using Milan and other similar anti-armour TOW systems.148 • United Nations Environment Programme • United Nations Environment Programme • United Nations Environment Programme •
WEAPONSAlthough it has a wide range of peaceful civilianapplications – such as medical radiation shieldingor counterweights in airplanes – DU is mainlyused for military purposes, such as armouringtanks. Due to its high density, high melting pointand ability to sharpen as it penetrates armourplating, it is also used in anti-tank munitions.DU forms a dust cloud on impact. Given that themetal is pyrophoric (i.e. the reaction of the metal tothe oxygen in air causes it to ignite spontaneously),the dust cloud burns and forms an aerosol offine DU oxide particles. The amount of depleteduranium transformed into dust depends on thetype of munition, the nature of the impact and thetype of target. When a target such as an armouredvehicle is struck by a DU penetrator, most of theDU remains inside as penetrator fragments orreacted dust. Some of it may, however, be dispersedinto the air and be deposited in the surroundingenvironment. DU hits on “soft” surfaces (e.g. nonarmouredvehicles, soft ground, etc.) do not producesignificant amounts of dust compared to “hard”surfaces (e.g. battle tanks, concrete surfaces, etc.).Human exposure to radiation from depleteduranium can be external, through contact with theskin, or internal, through inhalation or ingestion ofdepleted uranium particles. Radiation may result inan increased risk of cancer, with the degree of riskdepending on the part of the body exposed and theradiation dose. Like naturally occurring uraniumand other heavy metals, however, DU is alsochemically toxic. The level of toxicity depends onthe amount ingested and the chemical compositionof the uranium, but exposure to DU – to whichthe liver is the most sensitive organ – can lead tosevere poisoning within hours or days of exposure.DU’s chemical toxicity is usually considered thedominant risk factor, relative to its radioactivity.The extent to which DU can filter through soiland contaminate groundwater, as well as thepossibility of re-suspension of DU dust in the airby wind or human activity, are under investigationin the scientific community.Deep-penetrating munitions(‘bunker busters’)Deep-penetrating munitions are extremely effectivein demolishing hard or deeply buried targets, suchas command bunkers or ammunition stores. Thetechnology for these types of munitions was firstdeveloped in the 1980s and evolved in the 1990swith the creation of sophisticated ‘bunker buster’bombs, which are filled with explosives and havebuilt-in laser guidance systems. A series of custommadebombs that was recently developed to destroyhardened or deeply buried structures can penetratereinforced concrete to a depth ranging from 1.8m to over 6 m. These weapons require very heavywarheads to increase their penetrating ability. Asconcerns were raised about the possible use ofDU-containing ‘bunker buster’ munitions by theIsraeli Defense Forces (IDF) during the conflict,the <strong>UNEP</strong> team investigated this issue.White phosphorus (WP)White phosphorus is a common form of thechemical element phosphorus. It has extensivemilitary application as an incendiary agent, smokescreento conceal troop movements and as anantipersonnel flame compound capable of causingserious burns. White phosphorus is a colourless,white or yellow waxy substance with a garlic-likeodour. It reacts rapidly with oxygen and catches fireeasily. It is used in bombs, artillery and mortar shells,which burst into burning flakes of phosphorus uponimpact, and has a long history of military use foroffensive and target-marking purposes.Burning WP produces a hot, dense, whitesmoke, which is usually not hazardous in theconcentrations produced by a battlefield smokeshell, although breathing WP for short periodsmay cause coughing and irritation of the throatand lungs. Breathing WP for long periods causes acondition known as “phossy jaw”, which results inpoor wound healing of the mouth and breakdownof the jawbone. However, exposure to heavy smokeconcentrations of any kind for an extended period(particularly near the source of emission), does havethe potential to cause illness or even death.In air and surface soil, WP reacts with oxygen to formrelatively harmless chemicals within minutes, while inwater it reacts with oxygen within hours or days andcan accumulate slightly in the bodies of fish living incontaminated water. In deep soil or sediment withvery low oxygen concentration, however, WP mayremain unchanged for many years.• United Nations Environment Programme • United Nations Environment Programme • United Nations Environment Programme •149