Seven people have been charged and nearly $10 million worth of cannabis seized from a property at Ballimore.
In December 2019, detectives from the State Crime Command's Drug and Firearms Squad established Strike Force Emerstan to investigate the cultivation and supply of cannabis across the Central West.
Their inquiries uncovered a rural property near Dubbo being used for the cultivation of cannabis.
On Monday, strike force detectives executed a crime scene warrant at a Ballimore property, with assistance from Orana Mid-Western Police District, Western Region Enforcement Squad and the Dog Unit.
Officers located and seized more than 2440 cannabis plants and 350 kilograms of dried cannabis, with an estimated potential street value of more than $9.6 million.
Five men - aged 26, 40, 42, 45 and 52 - and two women - aged 34 and 59 - were arrested at the property and taken to Dubbo Police Station.
All seven people were charged with cultivate prohibited plant of a large commercial quantity cannabis; supply prohibited drug of a large commercial quantity; and participate in a criminal group and contribute to criminal activity.
The 26-year-old man was also charged with possessing a prohibited drug.
Police will allege in court that the group were involved in the large-scale cultivation and supply of cannabis across NSW.
All seven were refused bail and are due to appear at Dubbo Local Court on Tuesday.
Investigations by the Drug and Firearms Squad are continuing, and further arrests are expected, police said.