It's being described as one of the largest crystal meth seizures in Grey and Bruce Counties.
On Saturday, following a two month drug investigation, Hanover Police executed a pair of search warrants in the300 block of 10th Street and the 200 block of 11th Avenue.
Officers discovered 18.45 ounces (516.6 grams) of crystal methamphetamine, a small quantity of hydromorphone, a small quantity of suspected cocaine and Percocet tablets.
The total street value of the drugs seized is estimated to be $51,000.
Also seized were prohibited weapons and $2,885 in cash.
Three Hanover residents were charged with various drug and weapons offences.
An arrest warrant has been issued for a former Owen Sound woman for her alleged role.