Amendment status not verified — confirm the current text below against the official source.
Whenever, undcr this Act or any rule ~nade hcrcunder, he doing or [he ornilting to do anything or the validity of anything depends upon rhc approval, sanc~ion, consent, concurrencc, dcclaradon, opinion or satisfaction of- (a) the Board or the Chairman, or (6) any officcr or servant of the Board, a wriitcn documenl, signed, in casc (a) by rhc Chairman, and in casc (b) by rhc said officer or servant, purporting to convcy or set forth such approval, snnc t ion, conscn t, concurrence, declaradon. opinion or salisract ion, shall bc suficicnt cvidence 01 such approval, sancdon, consent, concurrencc, declaration, opinion or sa~isfaction.