The owners of a wood flour mill say they are "shocked and saddened" by an explosion which is feared to have killed four people.
In its first comments since the tragedy, Wood Treatment Limited said:
We are shocked and saddened by the incident at our mill in Bosley and our thoughts and sympathies are with everyone affected and their families.
The mill has been part of the community in Bosley since 1927 and we take the safety of our employees extremely seriously. We are committed to establishing the cause of this incident and we will continue to co-operate fully with the emergency services and Health and Safety Executive.
However, we feel it would be inappropriate to comment further at this time while investigations are ongoing.
Rescue workers are now entering a "search and recovery phase" at the scene of the Bosley mill blast, fire crews have said.
"We are moving into a search and recovery phase rather than a search and rescue phase", Paul Hancock, the chief fire officer for Cheshire Fire Service told reporters.
He added: "There is always hope - but I think the longer the incident goes on...realistically we are now looking at a search and recovery phase but we are still hopeful of finding life as well."
Mr Hancock said crews were making "good progress" but warned the operation was going to take a "long time" to search the "scene of devastation".
He also said his team paused last night to pay their respects to the family of a worker who was found dead. The victim is yet to be identified.
Watch live as fire crews provide an update on the search for the missing Bosley workers, three days after a huge explosion ripped through the wood treatment mill.
This live press conference has now finished
The owners of a mill where four people are feared dead after a blast were warned of the risk of an explosion two years ago.
The Health and Safety Executive (HSE) told Wood Treatment Limited in March 2013 that it was failing to control the risk of an explosion from liquid petroleum gas stored at the plant in Bosley, Cheshire.
In the notice, it said the tanks "are not protected by suitable barriers" to minimise the risk of a blast.
Wood Treatment, part of The Boden Group of Companies, has yet to make any statement about Friday's incident.
Earlier, the family of one missing worker told ITV News that they were "very, very angry" at the lack of support from the mill owners.
The family of one of the workers missing in the Bosley explosion has said they are "very, very angry" at the lack of sympathy from the mill's owners.
Speaking to ITV News, the family said the Cheshire mill's owners had not been in touch with them since Friday's blast.
They said they had received no comfort, support, counselling or sympathy from the Boden group.
ITV News correspondent Damon Green said: "They were very unhappy at the fact that the employers, the owners of this mill, have not been in contact with them at all in three days since their family member went missing.
"That has made them very, very angry indeed."
A body was found in the wreckage last night but was yet to be identified.
Council officers visited the Bosley mill weeks before Friday's explosion following complaints over saw dust, it has emerged.
Enforcement officers from Cheshire East Council were on the site just two weeks ago to make sure the firm cleared the area after the complaints. The site was also struck by two fires, in 2010 and 2012.
Michael Jones, leader of Cheshire East Council, said: "We were on site two weeks ago clearing it up and they did well to clear it up. We will produce that evidence as and when necessary.
"We were there to clean up a situation of dust particles in the area, at the exterior to it, that shouldn't have been in there and we did clear it up and we have got before and after pictures showing what a job they did and they did comply completely with our orders."
Police said they would be working in the next few days with the company - which has yet to make any statement about the incident. They are holding a joint investigation with the Health and Safety Executive.
Firefighters will return to the Bosley mill at daybreak today in the belief they are still looking for survivors after Friday's devastating explosion.
Three people are still missing following the fire that has left one person confirmed dead.
Paul Hancock, chief fire officer for Cheshire Fire and Rescue Service, said: "The whole mental psyche of the crews down at the site is they are looking for people still alive. They will not give up hope until they locate these four individuals.
"The scene down there is one of complete devastation. We have a building that has exploded from the inside and subsequently collapsed in on itself."
A body has been recovered by rescue workers searching for four missing people after a blast at a wood mill in Cheshire, police say.
"It is with regret that Cheshire Police are confirming this evening that a body has been located," a statement said.
The families of William Barks, 51, Dorothy Bailey, 62, Jason Shingler, 38, and Derek Moore, 62, have been informed but the body has not yet been positively identified, police said.
The huge explosion on Friday morning reduced the four-storey building in Bosley, Cheshire to rubble.
Four people missing after a devastating mill explosion and fire in Cheshire have been named by police.
The four missing people have been named by Cheshire Police as;
William Barks, 51.
Dorothy Bailey, 62.
Jason Shingler, 38.
Derek Moore, 62.
"At some point in the next [few] days we will hand over the scene from fire to police for a joint investigation with the health and safety executive," Assistant Chief Constable Guy Hindle said.
Fire chiefs called the site a "very challenging environment" and praised crews working to locate the missing workers.
The search for four missing people after a number of explosions at a mill in Bosley Mill has gone from a search and rescue to a recovery operation.
Search teams must now to take apart the wreckage piece by piece, to find the three men and one woman still missing.
They are using sniffer dogs as they concentrate on two specific areas where they believe those trapped may have been when the blast went off.