There are some 37 million tonnes of debris to clear away in Gaza once the Israeli offensive is over, a senior official with the UN Mine Action Service said Friday.

And unexploded ordnance buried in the rubble would complicate that work, said UNMAS’ Pehr Lodhammar, who has run mine programmes in countries such as Iraq.

It was impossible to say how much of the ammunition fired in Gaza remain live, said Lodhammar.

‘We know that typically  there is a failure rate of at least 10 per cent of land service ammunition,’ he told journalists in Geneva.

‘What we do know is that we estimated 37 million tonnes of debris, which is approximately 300 kilos of debris per square metre,’ he added.

Starting from a hypothetical number of 100 trucks, that would take 14 years to clear away, he said.

Lodhammar was speaking as UNMAS launched its 2023 annual report Friday.

Israel has killed at least 34,356 Palestinians till October 7, 2023.