Sparks apparently hit the soundproofing material on the ceiling which triggered the blaze, which quickly got out of control.

BBC: Could Brazil's club fire have been avoided?

Chrysler has also put a significant amount of unit-cost into soundproofing, with acoustic windshield and front-window glass and other noise abatements.

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Landlord Kevin Grantham met with the council on Friday, 17 April, 2009, to discuss the soundproofing options, which are proving extremely costly.

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"The issue is the cost in fully soundproofing the venue, " said Kevin.

BBC: Norfolk - Queen Charlotte facing closure

"Since cork can modulate temperature and damp sound, " says Ms. Moura Guedes, "it could turn up in large public spaces, terminals or restaurants" and be applied beyond existing soundproofing usage in recording studios.

WSJ: Cork's Popping Potential

Then, in the pre-dawn hours of Sunday, it turned into a scene of indescribable horror as sparks lit a fire in the soundproofing material above the stage, churning out black, toxic smoke as flames raced through the former beer warehouse, killing 231 people.

NPR: No Alarm, Only 1 Exit In Brazil Nightclub Fire

I. (AP) Survivors and family members of the 100 people killed in a Rhode Island nightclub fire are observing the 10th anniversary of the blaze, which broke out when pyrotechnics for the rock band Great White ignited flammable packing foam that had been installed inside the club as soundproofing.

NPR: Deadly RI Nightclub Fire Remembered 10 Years Later