The examination of witnesses is conducted by the President.

The members of the Commission may however put to each witness questions which they consider likely to throw light on and complete his evidence, or get information on any point concerning the witness within the limits of what is necessary in order to get at the truth.

The agents and counsel of the parties may not interrupt the witness when he is making his statement, nor put any direct question to him, but they may ask the President to put such additional questions to the witness as they think expedient.