Section 65: Correction of clerical errors, etc .-Clerical or arithmetical mistakes in any decision or order passed by the Appellate Board or the adjudicating officer under this Act, or errors arising therein from any accidental slip or omission may, at any time, be corrected by the Appellate Board or the adjudicating officer or his successor-in-office, as the case may be:

Sec 64 — Preparation, attempt, etc .-(1) Whoever makes preparation to contravene any of the provisions of this Act other than section 13, clause (a) of sub-section (1) of [section 18, section 18-A], clause (a) of sub-section (1) of section 19, sub-section (2) of section 44 and sections 57 and 58 or of any rule, direction or order made thereunder and from the circumstances of the case, it may be reasonably inferred that if not prevented by circumstances independent of his will, the contravention as aforesaid would have taken place, shall, for the purposes of section 56, be deemed to have contravened that provision, rule, direction or order, as the case may be