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

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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.

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"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.

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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.

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