Early Atomic Artillery

Cold War Giants

As noted in previous writing, during the period of the Cold War when deterrence by amassing more nuclear weapons than the Soviets was the goal, the critical question in addition to “who has more” was “who can hit the target fastest?  This was a time before long range Intercontinental Ballistic Missiles (ICBMs), and time to deploy and fire was an important factor.

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Especially worrisome to President Eisenhower and his Army Joint Chief of Staff, General Joe “Lightning Joe” Collins was the deployment of 200,000+ Soviet infantry on the line dividing East and West Germany.  It was said that in the area of the Fulda Gap German and US troops could see each other through the flimsy barbed wire fence that divided the country in half.  The Fulda Gap, a flat plain between mountain ranges, was the area identified by the US military as most likely to stage a Soviet invasion of West Germany. 

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With the onset of the Korean War in 1950 and our belief it might be a Soviet decoy-war so they could invade West Germany. In 1950, President Truman recalled 5-star General Eisenhower to military duty and made him the Supreme Commander of NATO forces in Europe. Ike immediately deployed the US Army 3rd Infantry Division to the frontlines at the Fulda Gap to replace the green UN forces that were there.  This was a message to Stalin the WWIIs most renowned and famous General was ready for any Soviet Army advance.

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On the weapons front in the early 1950s, development and testing of atomic artillery was being heavily funded to get these precision nukes to our front line troops. Top Secret documents of Army JCS General Collins showed time to target was considered best, 3 hours, with an atomic cannon and worst with an aircraft bomber(10 hours). The Honest John Rocket was also fast at 4 hours but early versions had liquid fuel rockets that took a while to fill with fuel and risked explosion during filling.  Both Corporal and Redstone missiles, or guided rockets, were being developed but hadn’t tested up to needed specifications.

The Uranium in the early atomic shells reached criticality by a “gun style” mechanism, that is an internal explosion in the warhead shot a small mass of uranium-235, shaped like a ball, into a donut shaped ring of Uranium-235. Together inside an 800 pound, 4,5’ long, warhead (the donut and the inserted “donut ball” achieved critical mass and exploded with the force of the 10,000 Fat Man that we dropped on Hiroshima in 1945.

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These warheads, developed in 1950-1955 were named W7 and W9 warheads and were used on the earliest nuclear-capable artillery: Atomic Cannon, Corporal Missile and Honest John Rocket.

Atomic Artillery

280mm shell

Mr. Irving Mayer File | Cold War Giants

“God is on the side that has the best artillery”
……Napoleon

“Atomic artillery may prove to be the most effective ever created by man.”
…….US Army 1953

Atomic Artillery was conceived of a few years after World War II but it was considered impossible to do. There were 2 main concerns. First since no artillery shell had ever had a perfect firing record, one with the power of an atomic bomb could misfire and kill thousand of US troops. Second, from an engineering standpoint, is that the force of thrust needed to propel it out of a gun barrel would disrupt the fissile uranium core resulting again in either a catastrophic misfire or an ineffective, but radioactive dud. No wonder the engineers at the Pentagon deemed it impossible.

Where Atomic Artillery designed and manufactured?

Having been turned down by his peers at the Pentagon, Colonel Angelo R Del Campo, Jr went in search of a ballistics engineer in the US Army Ordnance Corps at Picatinny Arsenal in Morris County New Jersey.

Picatinny Arsenal | Cold War Giants

Why Picatinny Arsenal?

Picatinny Arsenal had produced the most artillery shells for the US and the Allied forces in World War II. In fact Picatinny Arsenal has had a major impact on every conflict since the Revolutionary War:

-Provided General George Washington and his Continental Army with gun powder and supplies after he crossed the Delaware River during his layover in Morristown, New Jersey. It was during this layover that Alexander Hamilton met and married a Morristown girl.

As one of the outnumbered northern arsenals at the outbreak of the Civil War it provided gun powder and cannon balls to the North’s Union Army. After the Civil War the federal government made it the first Federal Arsenal and using government funds to expanded it’s production and manufacturing facilities.

Running 3 shifts 24/7 starting in 1940 to supply arms to our European Allies, it brought in thousands of assembly line workers to build munitions. Uncle Sam built an entire town to house Picatinny workers nearby. Named “Victory Gardens” it had thousands of small single family homes that were offered for free to anybody that relocated to work on the war-effort at Picatinny. The only cost, or caveat, that the occupants must have a food garden since, with thousands of “Rosie-the Riveters moving into the area, a food shortage was anticipated. It was incorporated as a borough a few years after WWII.

Picatinny House | Cold War Giants

Typical home built to house Picatinny workers during the 24/7 war effort. In back is a small food garden to help feed the thousands of war effort workers that poured into Morris County New Jersey.

Picatinny also constructed a railroad to move the munitions from the assembly line to Morris County Airport where it could be transported to the large metropolitan Airports and flown to Europe. The railroad cars had special “sparkless metal” wheels so that none if the ammunition could be accidentally ignited.

So how powerful is an atomic artillery shell?

The initial shell developed at Picatinny Arsenal was planned to be as powerful as the Fat Man dropped on Hiroshima. Below are the comparative sizes of the first 3 Atomic Bombs that underwent a full military weapon detonation,

Fat Man and Little Boy | Cold War Giants

 

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Atomic Annie: Greatest Weapon Breakthrough Since the Manhattan Project

Atomic Annie: Greatest Weapon Breakthrough Since the Manhattan Project

Atomic Annie covers a range of fascinating history, including the development of the atomic bomb, the history of Picatinny Arsenal, the Ghost Army, great NFL games, and the Korean War.