- Estimates of Principal Characteristics (3-Digit Level Classification-NIC 2008) under Annual Survey of Industries in Koppal District of Karnataka {(NIC : 016, 101, 104 to 106, 110, 120 and 181) (2011-2012)}
- Estimates of Principal Characteristics (3-Digit Level Classification-NIC 2008) under Annual Survey of Industries in Koppal District of Karnataka {(NIC : 201, 210, 239, 241, 351, 352 and 452) (2011-2012)}