hn.today

The art of defusing a second world war bomb

theguardian.com33 points12 comments
Screenshot of The art of defusing a second world war bomb

On 14 January 2026 two Second World War bombs surfaced in Devon within hours of each other: a 250kg German bomb dredged up and sitting on a barge at Exmouth Marina, and a 50kg device uncovered more than four metres down on a Plymouth building site. The discovery triggered a coordinated response from military and civilian teams - the army’s 11 Explosive Ordnance Disposal and Search Regiment, Royal Navy divers and private UXO contractors - and an initial communications mix-up over locations and device sizes. The piece follows operators on the ground, including a diving bomb-disposal operator known as “the Doom Watch,” and shows how decisions are made under pressure: assess the fuze, cordon and evacuate, then either render-safe by removing to sea or place sandbags and detonate in situ.

The account explains why these legacy munitions remain a core part of modern bomb-disposal work: the Luftwaffe dropped tens of thousands of tonnes of ordnance on Britain and an estimated one in ten failed to detonate. Fuzes - electrical ones now inert and mechanical delayed-action “tickers” - determine whether a bomb can be moved. Corrosion, shifting ground and past manufacturing flaws make fuzes unpredictable. Rising urban development, hobbyist magnet-fishing and deeper excavations have increased detections, while past civilian and specialist deaths underline the continuing lethal risk.

Read on theguardian.com12 comments on Hacker News

Summary generated by AI from the linked article. hn.today is not affiliated with Hacker News or Y Combinator.

More in Security

Is Criminal Forensics Bullshit?

Is Criminal Forensics Bullshit?

Sara Gordon's research questions the scientific validity of forensic techniques like blood pattern analysis and ballistics, which are often accepted uncritically in court. Studies show these methods have significant uncertainties and rely more on subjective interpretation than rigorous science. (nautil.us)

The daily digest

Today's best Hacker News stories, summarized and screenshotted, one email a day.