Prison-made shivs are among the contraband found in Cessnock Correctional Centre, as part of raids carried out in jails across the state.
Operation Purge kicked off in mid-August with more than 1,300 officers sweeping cells and common areas in NSW prisons.
More than 4,000 inmates have been searched.
Seven litres of prison brew, steroids, mobile phones and tobacco have been seized, with 48 inmates facing charges.
Inmates found with contraband can be prosecuted, segregated and/or withdrawn of privileges, such as television, use of ‘buy-ups’ and contact visits for up to 56 days.