17. Where an offence under this Act or any regulation or rule made thereunder is committed by a body of persons, then-
(a) if that body is a body corporate, every person who at the time of the commission of such offence was the Director, General Manager, Secretary or other similar executive officer of that body; |
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(b) if that body is not a body corporate, every person who at the time of the commission of the offence was the Chairman, General Manager, Secretary or other similar executive officer of that body; |
| shall be deemed to be guilty of that offence, unless he proves that the offence was committed without his knowledge or that he exercised all due diligence to prevent the commission of that offence. |