The ceilings of a listed Liverpool building are set to be removed and replaced after people working there ran the risk of injury.
Documents show more than half the ceilings in Water Street's failed safety tests and were deemed at risk of collapse by surveyors.
The building's owners have now submitted planning permission to the city council to replace them.
And a letter from external company Building Surveyors, brought in to carry out the tests, said other collapses in the iconic building nearly injured people inside.
The letter reads: "Following initial non-destructive surveys it was brought to our attention that further ceilings had collapsed almost injuring operatives in the process.
"In light of this it was decided that additional, more intrusive surveys would be necessary in order to definitively confirm the structural integrity of the ceilings."
The document goes on to say the later surveys involved drilling small holes in the ceilings to determine whether they were 'structurally unsafe and at risk of collapse'.
A separate diagram appears to show that the majority of the ceilings in the building that were subjected to this test failed.
Local authority planning officers will have to approve the application before work can start.
The landmark has already undergone significant renovation over the past few years since being chosen as the site for HMRC's huge new Liverpool office .
India Buildings was completed in 1932 and is Grade II* listed.
HMRC became the building's latest tenant this year with more than 3,500 staff eventually expected to move into the building.
The news comes just weeks after it emerged the refurbishment was being delayed until next year after huge quantities of asbestos were uncovered.
Contractors working on the site uncovered large amounts of the toxic substance - once a common building material until the discovery it can cause fatal lung disease.
Workers were supposed to be re-locating from their current Triad site in Bootle by this year, but now HMRC has confirmed its staff will not move until at least November next year 2020.
