Appellants brought an action in the United States District Court for the Western District of Missouri seeking a declaratory judgment that they were beyond the jurisdiction of the Federal Trade Commission and asking the district court to enjoin the enforcement of investigative subpoenas issued to appellants by the FTC. Upon due consideration of the contentions of the parties, the district court (Senior District Judge William H. Becker) filed an opinion reported at 434 F. Supp. 159 (W.D.Mo.1976), and for reasons enunciated therein dismissed the action without prejudice, finding that appellants had an adequate remedy at law. This appeal followed. We affirm.

A brief summary of the pertinent facts will lend support to an understanding of the issues on appeal. On January 30, 1974, the FTC began an investigation of Falcon Enterprises, Inc., and others (not including appellants) to determine whether or not they were engaged in unfair or deceptive practices in violation of the FTC Act. On September 11, 1974, the FTC issued a subpoena directing James L. Flanary, chief executive officer of Blue Ribbon Quality Meats, Inc. (Missouri corporation) and Blue Ribbon Quality Meats, Inc. (Kansas corporation) to appear and produce specified documents. On April 14, 1975, the FTC denied a motion by appellants to quash the subpoena or limit the scope of the subpoena duces tecum. On May 5, 1975, appellants filed a motion with the FTC challenging the Commission's authority to conduct an investigation of Flanary and Blue Ribbon. This motion was also denied.

Appellants then sought from the district court a declaratory judgment that they are beyond the jurisdiction of the FTC. They alleged that their business was purely intrastate, that they were exempted from FTC jurisdiction as "packers" under the Packers & Stockyards Act, 7 U.S.C. § 181, et seq., and that the subpoena's request for materials was over-broad, burdensome, sought privileged information, and was unconstitutional. Appellants asked the district court to enjoin the FTC from further proceedings against them, arguing that irreparable injury would result otherwise.

We note at the outset the difference between the FTC's investigatory power under 15 U.S.C. § 46 and its regulatory power under 15 U.S.C. § 45. Section 46 exempts only banks and common carriers subject to the Interstate Commerce Act. No specific exemption is conferred on packers, nor is reference made to the Packers & Stockyards Act. The exemptions set forth in § 45 are considerably broader in scope and specifically include "persons, partnerships, or corporations insofar as they are subject to the Packers & Stockyards Act . . . except as provided in section 406(b) of said Act . . . ."1 Thus, it is clear that the investigatory power granted the FTC under 15 U.S.C. § 46 reaches further than the regulatory power granted it under 15 U.S.C. § 45. This fact should not be surprising. Moreover, our reading of the two statutory provisions comports with that of the First Circuit in Federal Trade Commission v. Swanson, 560 F.2d 1 (filed June 9, 1977) (1st Cir. 1977). Like the present case, Swanson involved a challenge to an FTC investigation by a party which did not possess a clear exemption from FTC investigation under 15 U.S.C. § 46. There, the court refused to read a § 45 exemption into § 46. "The language of § 46 is plain, and appellants do not convince us that the inconsistencies between sections 45 and 46 create an unworkable regulatory scheme." Federal Trade Commission v. Swanson, supra at 1-2.

In reaching its conclusion that appellants had an adequate remedy at law, the district court noted that in order to compel obedience the FTC must seek an order from a federal district court enforcing its subpoenas. 15 U.S.C. § 49. The district court reasoned that appellants could raise the alleged over-breadth and undue burden of an FTC subpoena in the subpoena enforcement proceeding. See Reisman v. Caplin, 375 U.S. 440, 84 S. Ct. 508, 11 L. Ed. 2d 459 (1974); Anheuser-Busch, Inc. v. Federal Trade Commission, 359 F.2d 487 (8th Cir. 1966). With respect to appellants' challenge to FTC jurisdiction over them, the district court stated that adequate remedy at law existed in the opportunity for judicial review following completion of an agency proceeding. The district court noted that the question of jurisdiction must be determined in the first instance by the agency itself. Oklahoma Press Publishing Co. v. Walling, 327 U.S. 186, 66 S. Ct. 494, 90 L. Ed. 614 (1946); Myers v. Bethlehem Shipbuilding Corp., 303 U.S. 41, 58 S. Ct. 459, 82 L. Ed. 638 (1938).

Our review of the record discloses no abuse of discretion in the district court's dismissal of appellants' action for declaratory judgment and injunctive relief. Appellants' charges that the subpoenas are over-broad, unduly burdensome, or unconstitutional clearly may be litigated in the enforcement proceedings for those subpoenas. As to appellants' argument based on lack of FTC jurisdiction, we need not decide whether that challenge, too, may be raised in the enforcement proceedings,2 or whether appellants must refrain from challenging FTC jurisdiction until, if ever, a cease and desist order is issued against them. See Seven-Up Company v. Federal Trade Commission, 478 F.2d 755 (8th Cir.), cert. denied, 414 U.S. 1013, 94 S. Ct. 379, 38 L. Ed. 2d 251 (1973). We need only conclude that the district court did not err in holding that appellants do have an adequate remedy at law. Finding as we do that the district court properly disposed of the case, we affirm for the foregoing reasons and on the basis of the district court's opinion.