Metal thefts fell across Derbyshire during a three-month operation and more than 60 people were arrested.
Operation Calanthia was set up to tackle the growing problem of theft of metal such as copper, lead, iron and steel.
It ran between September 1 and December 31, during which time incidents of metal thefts fell across the county.
Police arrested 63 people on suspicion of stealing metal during the operation and scrap dealers throughout Derbyshire were visited to remind them of the legislation.
Supt Debbie Mathews, of the force’s Operational Support department, said: “Theft of scrap metal has been an increasing issue for the force and Operation Calanthia was designed to bring thefts down, increase awareness among scrap merchants and help to target harden vulnerable buildings, such as churches and businesses.”