The inquest was told there had been another roof collapse at the mine five days earlier.

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The firm, which also suffered a roof collapse at an office block in central Seattle, sent home about 70, 000 factory workers.

BBC: Seattle quake damage 'tops $1bn'

Fleur El-Hspa, owner the Picasso Express restaurant which had to close due to the roof collapse, said regeneration plans had been in the pipeline "for a couple of years".

BBC: Langney roof collapse

We had an inward roof collapse.

BBC: Firefighters tackle West Bromwich textiles unit blaze

Crews tackling the blaze inside the building were forced to withdraw before the flames caused the roof to collapse.

BBC: Waterlooville Co-op store destroyed by freezer fire

That was followed by a collapse of a roof panel at the stadium on May 27 after rainwater collected on the roof.

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In Patchogue, officials were investigating a collapse at a vacant auto parts store, and Deer Park High School sent students home after a leaky roof.

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