This appeal ' presents the question whether the granting of a motion to dismiss for lack of subject matter jurisdiction in this federal antitrust case was proper. The trial court,
Plaintiff, Rosemound Sand & Gravel Company, a Texas limited partnership qualified to do business in Louisiana, brought suit under the Sherman, Clayton, and Robinson-Patman Acts for damages said to result from the activities of three Louisiana sand and gravel companies. Rosemound alleged that these three companies combined to interfere with an output-requirements agreement which Rosemound had arranged with a large construction company. All defendants before the court moved to dismiss, claiming a total lack of interstate involvement.
At the outset, it is necessary for us to describe the procedural construct of this case. Because of some misleading language in the docket entry for the opinion below, and in the opinion itself, to the effect that the court rendered a summary judgment instead of dismissing the case, much of the argument on this appeal has been directed incorrectly, but not surprisingly, to the propriety of this course of action. An examination of the pleadings and a careful reading of the opinion below, however, show that the only motion before the court was one to dismiss under Fed. R.Civ.P. 12(b)(1), and that the district court granted this motion and dismissed the case. The trial court’s taking cognizance of matters outside the pleadings may have added to the confusion, but it is clear, under the last sentence in Rule 12(b), that the only motion under this Rule which can be treated as a motion for summary judgment when outside matters are considered is that numbered (6), failure to state a claim upon which relief can be granted. Estes v. Shell Oil Co., 5 Cir. 1956,
Although it was correct to treat the motion as one to dismiss, Rosemound argues, somewhat obliquely, that the motion should not have been granted prior to a trial on the merits. In some instances courts have refused to approve such a dismissal before a plaintiff has had an opportunity to discover the facts necessary to establish jurisdiction.
See
Surpitski v. Hughes-Keenan Corp., 1 Cir. 1966,
Rosemound urges that it was denied its Seventh Amendment right to a trial by jury because of the trial judge’s decision on the jurisdictional question. The short answer is that there has been no denial of this right because questions of jurisdiction are properly within the ambit of the court’s authority. Gilbert v. David, 1915,
Finally, Rosemound insists that the district court erred in dismissing the complaint on the grounds that the defendants were not engaged in commerce and that their product did not flow in interstate commerce. Generally, a plaintiff's allegations of jurisdiction are sufficient, but when they are questioned, as in this case, the burden is on the plaintiff to prove jurisdiction. McNutt v. General Motors Acceptance Corp., 1936,
Affirmed.
Notes
. The facts which Rosemound claimed constituted a sufficient connection with interstate commerce were that it was n Texas partnership with a Texas office; that the company to which it planned to sell sand and gravel had its offices in Tennessee; that Rosemound and the defendants purchased some supplies out of state; that the sand and gravel sold by the defendants to Rosemound’s expect-ert customer were marte into concrete “mattresses,” floated down the Mississippi, and placed on its bed; and that defendants sold sand and gravel to Louisiana contractors for the construction of highways. Despite these attempts to establish a nexus with interstate commerce, it was still uncontroverted that all sales of sand and gravel were made in Louisiana for Louisiana projects.
