The E48 particulate bomb was a U.S. biological sub-munition designed during the 1950s for use with the E96 cluster bomb.
In February 1950 a U.S. Army report prepared by William Creasy, a colonel within the U.S. bio-weapons program, noted that the E48 particulate bomb was in its final stages of development. [1] Creasy also reported that the E48 had been successfully tested in three field trials. [2]
The E48 particulate bomb was a 4-pound (2 kg) sub-munition meant to be clustered in the E38 type cluster adapter, together the E48 and E38 constituted the E96 cluster bomb. [1] In practice, the E96 and its payload of E48 sub-munitions was intended to be air-dropped from 35,000 feet (11,000 m). [1] The weapon could generate an elliptical aerosol agent cloud from this altitude that had major axes of 3,000 and 8,000 feet (910 and 2,440 m). [1] Some of the agents considered for use with the E48 included, B. suis , anthrax, and botulin. [1]
The E48 sub-munition was utilized in tests at Dugway Proving Ground in July and August 1950. [3] The July tests released Bacillus globigii from the E48 using air-dropped cluster bombs. [3] The August tests utilized the bacteria Serratia marcescens , and involved E48s which dispersed the agent statically, from the ground. [3]
Operation LAC was a United States Army Chemical Corps operation which dispersed microscopic zinc cadmium sulfide (ZnCdS) particles over much of the United States and Canada in order to test dispersal patterns and the geographic range of chemical or biological weapons.
The M143 bomblet was a biological cluster bomb sub-munition developed by the United States during the 1960s. The spherical bomblet was the biological version of the Sarin-filled M139 chemical bomblet.
The M33 cluster bomb, also known as the (M33) Brucella cluster bomb, was a U.S. biological cluster bomb developed in the early 1950s and deployed in 1952. It was the first standardized biological weapon in the U.S. arsenal.
The M114 bomb was a four-pound U.S. anti-personnel bomb and biological cluster bomb sub-munition. The M114 was used in the M33 cluster bomb.
The M115 anti-crop bomb, also known as the feather bomb or the E73 bomb, was a U.S. biological cluster bomb designed to deliver wheat stem rust.
The Flettner rotor bomblet was a U.S. biological sub-munition that was never mass-produced. Based on the vertical Flettner rotor which takes advantage of the Magnus effect, a force acting on a spinning body in a moving airstream, it was developed toward the end of the U.S. biological weapons program in the 1960s.
The E77 balloon bomb was a U.S. anti-crop biological munition based on the design of Japanese Fu-Go balloon bomb. The E77 used feathers as a vector to disseminate anti-crop agents from a hydrogen-filled balloon and was first developed in 1950.
The M138 bomblet was a sub-munition of the U.S. chemical weapon, the M43 BZ cluster bomb. The bomblet contained BZ, an incapacitating agent and was developed with the M43 in 1962. The M138s, along with all other U.S. BZ weapons were destroyed during the 1980s.
The M44 generator cluster was an American chemical cluster bomb designed to deliver the incapacitating agent BZ. It was first mass-produced in 1962 and all stocks of the weapons were destroyed by 1989.
The E14 munition was a cardboard sub-munition developed by the United States biological weapons program as an anti-crop weapon. In a series of field tests in 1955, the E14 was loaded with fleas and air-dropped.
The E86 cluster bomb was an American biological cluster bomb first developed in 1951. Though the U.S. military intended to procure 6,000 E86s, the program was halted in the first half of the 1950s.
The E61 anthrax bomblet was an American biological sub-munition for the E133 cluster bomb. This anti-personnel weapon was developed in the early 1950s and carried 35 milliliters of anthrax spores or another pathogen.
The E23 munition was a cardboard sub-munition developed by the United States biological weapons program for use as an anti-crop weapon. The E23 underwent a conversion for use as a vector weapon and was briefly used in large-scale entomological warfare trial but technical issues forced it from the tests.
The M125 bomblet was a U.S. chemical sub-munition designed to deliver the nerve agent sarin. It was brought into service in 1954 with the M34 cluster bomb as part of the first U.S. air-delivered nerve agent weapon.
The MC-1 bomb was the first U.S. non-clustered air-dropped chemical munition. The 750-pound (340 kg) MC-1 was first produced in 1959 and carried the nerve agent sarin.
The E96 cluster bomb was an American anti-personnel biological cluster bomb developed in 1950.
Operation Dew refers to two separate field trials conducted by the United States in the 1950s. The tests were designed to study the behavior of aerosol-released biological agents.
Operation Polka Dot was a U.S. Army test of a biological cluster bomb during the early 1950s.
The Vigo Ordnance Plant, also known as the Vigo Chemical Plant or simply Vigo Plant, was a United States Army facility built in 1942 to produce conventional weapons. In 1944 it was converted to produce biological agents for the U.S. bio-weapons program. The plant never produced any bio-weapons before the end of World War II but did produce 8000 pounds of an anthrax simulant. The plant was transferred to Pfizer after the war; the company operated it until announcing its closure in 2008.