7. Two members shall constitute a quorum of the Commission.
In case of disagreement, respecting a decision to be rendered, the chairman shall have a casting vote.
Whenever a matter is heard, without the participation of the chairman, by the other commissioners, and the latter do not agree on a decision, the matter shall be referred promptly to the chairman for final decision by him.
1950-51, c. 20, s. 7; 1974, c. 76, s. 2.