Rule 613.        Prior Statements of Witnesses

(a) Examining Witness Concerning Prior Statement.  In

examining a witness concerning a prior statement made by the

witness, whether written or not, the statement need not be

shown nor its contents disclosed to the witness at that time,

but on request the same shall be shown or disclosed to

opposing counsel. 

(b) Extrinsic Evidence of Prior Inconsistent Statement of

Witness.  Extrinsic evidence of a prior inconsistent statement

by a witness is not admissible unless the witness is afforded

an opportunity to explain or deny the same and the opposite

party is afforded an opportunity to interrogate the witness

thereon, or the interests of justice otherwise require.  This

provision does not apply to admissions of a party-opponent as

defined in Rule 801(d)(2).