- 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 107, 110, 120 and 181) (2010-2011)}
- 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 and 452) (2010-2011)}