Motion from recent implosion recorded 121 miles away.

Kentucky Geological Survey (KGS) has published the findings from its monitoring of the event in an 11-page report, “Ground Motions Induced by the March 11, 2018, Implosion of the Capital Plaza Tower, Frankfort, Kentucky.”

With the permission of a couple of landowners, a private business and a state agency, the temporary instruments were set up a few days before the implosion and removed shortly afterwards. A high-speed video camera was also used to record the 10 explosions that weakened and collapsed the 28-story building. That allowed the KGS scientists to correlate the seismic readings with each blast and the building’s impact with the ground.

All of the temporary instruments recorded each explosion and the building impact, but other sensitive instruments around Kentucky in the KGS Seismic and Strong-Motion Network also detected the event. A station in Floyd County, Kentucky, 121 miles away from the implosion, recorded slight motions from the building’s collapse.

Although seismic waves induced by the collapse were detectable at such large distances, among the findings in the report is that in downtown Frankfort “shaking from the event was not likely felt by people, and damage to the built environment was unlikely at the distances of the KGS recording stations.”

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Workers exposed to radioactive particles during plant deconstruction.

Dozens of workers demolishing a plutonium processing plant from the 1940s have inhaled or ingested radioactive particles in the past year, and even carried some of that radiation into their vehicles, according to the U.S. Department of Energy.

Seven decades after making key portions of the atomic bomb dropped on Nagasaki, Japan, workers at the Hanford Nuclear Reservation are being exposed to radiation as they tear down buildings that helped create the nation’s nuclear arsenal.

The incidents have prompted the federal government, along with state regulators, to halt the demolition of the sprawling Plutonium Finishing Plant until a safe plan can be developed.

The contamination has also shaken confidence in a massive cleanup of Hanford, the nation’s most polluted nuclear weapons production site. The work costs the federal treasury around $2 billion a year. Hanford is near the city of Richland, about 200 miles southeast of Seattle.

“This is a very disturbing set of incidents,” said Tom Carpenter, head of the Seattle-based watchdog group Hanford Challenge.

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Tallest remaining Ronan Point-style block to be demolished due to structural concerns.

The tallest remaining tower block built using the same system as the ill-fated Ronan Point is set to be demolished due to concerns about its “long-term structural integrity”.

Leicester City Council is expected to approve proposals to knock down Goscote House on 16 April.

The 23-storey high rise was constructed in 1973 with the same large panel system as Ronan Point – a former tower block in east London which partially collapsed after a gas explosion in 1968, killing four people.

Landlords across the country have been uncovering safety concerns in similar blocks in the months since the Grenfell Tower fire last June.

According to an officer’s report to the council’s assistant mayor for housing, an investigation has found that the structural integrity of Goscote House’s concrete frame “cannot be guaranteed for longer than five years”.

The council had initially planned to refurbish the block at a cost of around £6.5m, including retrofitting sprinklers.

However, it now intends to push ahead with plans to demolish the building floor by floor for around £3m, and either redevelop the site or sell it on.

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