CMI is conducted under the Industrial Statistics Act, 1942 and covers those establishments which are engaged in manufacturing activities whether for whole or part of the Year with single or joint ownership or control and registered under Factories Act 1934. Somme factories which are liable for registration have also been covered. If, however, an establishment is engaged in more than one activity and separate accounts are maintained by the establishment for each activity, then separate returns are collected for each such activity. The defence and government workshops though engaged in manufacturing activities and registered under Factories Act are, however, excluded.