Iowa inmate Darron Dean appeals the district court’s 1 dismissal without prejudice of his 42 U.S.C. § 1983 action for failure to exhaust administrative remedies. We reviewed the district court’s fact findings for clear error and its conclusions of law de novo, and conclude that dismissal *434 was proper for the reasons stated by the district court. See 42 IP.S.C. § 1997e(a) (no action shall be brought with respect to prison conditions until such administrative remedies as are available are exhausted); Johnson v. Jones, 340 F.3d 624, 626 (8th Cir. 2003) (standard of review). Accordingly, we affirm. See 8th Cir. R. 47B.