Extraction of silver from its ore involving $\mathrm{NaCN}$, air and an active metal is known as

• Pattinson's Process, or Pattinsonisation, is a method for removing silver from lead .
• Amalgamation is a method of extracting metals with the aid of mercury. 
• Mc Arthur-forrest method is a metallurgical technique for extracting gold and silver from low-grade ore by converting the gold to a water-soluble coordination.
• Parkes process is a pyrometallurgical industrial process for removing silver from lead during the production of bullion. 

From the above statements,

We can say that  Extraction of silver from its ore involving $\mathrm{NaCN}$, air and an active metal is known as Mc Arthur-forrest method.