How were industries classified in the Industrial Policy Resolution of 1956?

Industries for government ownership, industries for private sector supplementation, and industries for private sector ownership.

In accordance with the goal of the state controlling the commanding heights of the economy, the Industrial Policy Resolution of 1956 was adopted. This resolution classified industries into three categories. The first category comprised industries which would be exclusively owned by the government; the second category consisted of industries in which the private sector could supplement the efforts of the public sector, with the government taking the sole responsibility for starting new units; the third category consisted of the remaining industries which were to be in the private sector.