FILED
United States Court of Appeals
Tenth Circuit

MAY 3 1999

PATRICK FISHER
Clerk

UNITED STATES COURT OF APPEALS

TENTH CIRCUIT

UNITED STATES OF AMERICA,

Plaintiff - Appellee,
vs.

LEVONE RAY MADEN,

Defendant - Appellant.	

No. 98-2009
(	D.C. No. CR-94-211 MV)
(D.N.M.)

ORDER AND JUDGMENT*

Before ANDERSON, KELLY, and BRISCOE, Circuit Judges.**

	Mr. Maden was convicted and sentenced after a jury trial for possession with intent to distribute more than fifty grams of cocaine base in violation of 21 U.S.C. § 841(b)(1)(A).  In an earlier appeal, United States v. Maden, 114 F.3d 155 (10th Cir. 1997), we affirmed Mr. Maden’s conviction, but held that the district court erred in departing downward from the guideline sentencing range.  We remanded so that the court could resentence Mr. Maden within the applicable guideline range.
	In this appeal, Mr. Maden challenges the constitutionality of the disparity between penalties for crack cocaine and powder cocaine, as well as the sufficiency of the evidence for a finding that the substance he possessed was actually crack cocaine.  Our jurisdiction arises under 28 U.S.C. § 1291 and 18 U.S.C. § 3742(a), and we affirm.
	As an initial matter, the mandate rule precluded the district court from hearing these issues because the panel in Mr. Maden’s initial appeal specifically instructed the court to resentence Mr. Maden within the applicable guideline range.  See United States v. Webb, 98 F.3d 585, 587-88 (10th Cir. 1996).  None of the exceptional circumstances identified in Webb, which would have permitted the court to depart from our mandate, were present in this case.  See id. at 587.
	However, even apart from the mandate rule, both issues are without merit.  We have ruled numerous times that the Constitution is not violated by the disparity in treatment between crack cocaine and powder cocaine.  See United States v. Williamson, 53 F.3d 1500, 1530 (10th Cir. 1995) (citing cases).  
	Mr. Maden argues that the government failed to prove that the substance he
possessed was crack cocaine because it allegedly was not at least fifty percent pure.  However, neither the Sentencing Guidelines nor the statute under which he was convicted establishes a purity level for crack cocaine.  See USSG § 2D1.1(c) notes to drug quantity table (D) (compare notes (B) & (C) which establish purity levels for “PCP” and “Ice”); 21 U.S.C. § 841(b)(1)(A).
	AFFIRMED.

						Entered for the Court

						Paul J. Kelly, Jr.
						Circuit Judge