A jury in Texas found the facility manager of Marathon Digital's mining site near Granbury, Texas, not guilty of 12 noise violations despite complaints from local residents.

Marathon's site manager, David Fischer, was found not guilty by a six-person jury in a case involving allegations that Marathon's Granbury site operated at a noise level that could cause hearing loss. This information was reported by the Fort Worth Star-Telegram on July 10.

Fischer's acquittal follows a lengthy TIME report dated July 8 that detailed allegations by more than 40 people in the Granbury area who said they suffered from adverse health conditions they believed were caused by noise from Marathon's site.

However, the noise violation charges were directed at Fischer, not the crypto mining firm. Fischer's attorneys said he was not the right person to blame and that Hood County should blame Marathon for the alleged violations.

In the lawsuit, Fischer's lawyers also argued that Shirley's readings were exaggerated and that the noise from Marathon's miners was not false because it was a legal industrial site.

Bitcoin (BTC) mining is a resource-intensive process that uses specialized computers that solve cryptographic puzzles to secure the blockchain. Mining equipment generates significant amounts of heat and needs to be cooled.

Some Granbury residents have claimed that the noise made by the fans that cool these mining rigs — a high, low-frequency hum — and the mine's presence have been linked to heart problems, chest pain, migraines, nausea and tinnitus — often a ringing sound.

A Marathon representative told TIME that by the end of the year “we plan to replace the majority of air-cooled containers with immersion cooling” — a process in which mining rigs are submerged in a liquid that cools them.

Marathon did not immediately respond to Cointelegraph's request for comment.

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