MINNEAPOLIS (AP) — It’s another milestone in the demolition of the Metrodome.

On Sunday, the cables that supported the facility’s famous roof were severed as construction crews set off about a dozen explosive charges.

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Mortenson Construction said before the blasts that the noise would have a lower decibel level than pyrotechnics used after a Vikings touchdown. Still, the Star Tribune reports the noise prompted about a half-dozen calls to police from people who wondered what was going on.

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The Metrodome is being torn down to make way for a new $1 billion Vikings stadium. Steel installation for the new stadium is expected to begin in August.

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