It has been one month since the 78-year-old went missing, with her body believed to have been put in a wheelie bin which was then taken to the tip.
After seven days of searching, police confirmed they had found paperwork belonging to someone who resides in a street near Trotter’s home. The paperwork was found at the Swanbank Renewable Energy and Waste Management Facility.
Officers said the discovery “indicates current search efforts are concentrated in the right area”.
The search commenced on April 18 and was temporarily halted due to wet weather and high winds earlier this week.
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The search is expected to take several weeks depending on the weather.
Aerial drone mapping indicates 12.7 per cent of the rubbish that was quarantined has been searched.
Investigators continue to run out extensive enquiries in relation the death.
Anyone with information should contact Crime Stoppers on 1800 333 000.