Cassia County Sheriff Jay Heward says the street value of the plants was estimated at $6.6 million.
Forty-six people helped pull up the plants Thursday and load them onto large nets that were carried out by a U.S. Drug Enforcement Administration helicopter.
Heward says the DEA was flying an annual mission to locate marijuana plants when it discovered the grow site.
The sheriff says the investigation continues, but persons of interest have been identified.
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