Dozens of suspected criminals have been snared by police in a series of raids across Doncaster and the Dearne Valley.
Officers raided suspected drug dens and made 30 arrests for crimes including drugs offences, shoplifting, theft, assault and burglary.
A Swinton man was charged with drugs crimes and an offence under the explosive substances act. Meanwhile a Doncaster man was charged with theft.
Operation Cobra saw three days of action on January 23, January 29 and February 6.
Inspector Matt Collings said: “This operation was weeks in the planning and I am extremely pleased that it has been such a resounding success.
“As well as resulting in the arrests and charges of wanted suspects, Operation Cobra has also led to the removal of drugs and dangerous weapons from the streets.
“Drugs are an absolute blight on society. They can, and do, ruin countless lives. Through this high-profile, targeted policing work, we have succeeded in dismantling cannabis farms and seizing other substances, including amphetamine.
“I would also like to thank members of the public, who have been extremely patient and helpful as we carried out the operation in their neighbourhoods.”
In total, two people were cautioned for drugs offences, five were released due to insufficient evidence and others have been bailed pending further enquiries.
On the first day of action, four warrants were executed and 12 people were arrested.
Weapons and drugs were also recovered from addresses in Swinton.
On the second day, five search warrants were executed and a total of eight people were arrested.
Two cannabis farms were dismantled and one man was taken into custody on a recall to prison.
On the third and final day of activity, seven search warrants were executed and 10 arrests made.
One vehicle was recovered, as were quantities of cannabis from two separate addresses.
Supt Paul McCurry said: “This operation has demonstrated our commitment to tackle criminality.
“I would like to ask the public to ring South Yorkshire Police on 101 or Crimestoppers, anonymously, on 0800 555 111, to report crime or anti-social behaviour, which will help us to plan the next round of operations.”