Communications to be signed by the Secretary or the Assistant Secretary

Whenever the Commission is required to be consulted by or to give advice or forward proposals to, or to be consulted by, any authority, the opinion or the decision of the Commission shall be communicated in a letter signed by the Secretary, or by the Assistant Secretary and, in a case where the opinion or the decision is not unanimous, neither the fact of, nor the grounds for, dissent shall be communicated unless the commission so directs.