Thermal imaging cameras, timber supports and hydraulic rescue gear have been employed by firefighters at the Clutha bar in Glasgow.
Specially-trained firefighters from the urban search and rescue took a lead in the "difficult and complex" operation, Area commander Paul Connelly said.
The crash site is subject to an ongoing police investigation but management of the incident scene has been handed over to the city council aftwer the search operation was called off.
The bodies of the nine people who died when a police helicopter crashed into a Glasgow pub have been released to their families.
The removal of a helicopter from a Glasgow pub has enabled emergency services to continue their search for victims of Friday's tragedy.
Emergency workers are searching the wreckage of a Glasgow bar a night after a police helicopter crashed through its roof during a concert.