The mother of missing RAF airman Corrie McKeague says there's still no trace of him at a landfill site in Cambridgeshire.
Corrie disappeared on a night out in Bury St Edmunds in September last year.
The search for the 23-year-old restarted nearly one month ago in Milton.
Officers say they've still not found any rubbish from the time Corrie disappeared. A bulldozer has now been bought in to speed up the search.
On Facebook Nicola Urquhart said: "They are also now bringing in a bulldozer to move the searched rubbish, again I have been assured that this will have no negative impact on the quality of the searching but speed the process up."
"For this I am incredibly grateful as it is not easy waiting each day for a possible call. They have still not found any rubbish from the time Corrie disappeared it is still earlier dates up to the 18th of September."
The 23-year-old, who was based at RAF Honington, disappeared on a night out in Bury St Edmunds in September 2016.
The mother of missing Corrie McKeague says it's "back to the beginning" after a search for her son in a landfill site drew a blank.
Police have recently finished searching a landfill site for his body and say they are 'content' Corrie is not there.