A prayer service has been held to remember the victims of two explosions which destroyed a wood mill in Bosley in Cheshire a week ago.
Four people were left unaccounted for following the blast. Fire and rescue teams have found three bodies so far.
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.
An emotional prayer service has been held to remember the victims of the Bosley mill explosion, a week on from the disaster.
Kelvin Barks told ITV News his brother William, who was an engineer at the factory, tried to get a new job but 'had bills to pay'.
Dorothy Bailey, Derek Moore, Jason Shingler and William Barks have been missing since Friday's explosions.