on set forth in the affidavit is sufficiently compressive to establish the privileged nature of the material sought." Id. at *3. See also S.E.C. v. World-Wide Coin Investments, Ltd., 92 F.R.D. 65, 66-67 (N.D. Ga. 1981) (denying defendant's motion to compel an investigator to produce documents and answer deposition questions, fi