OPINION

NATHANIEL R. JONES, Circuit Judge.

These two consolidated appeals concern a hotly contested antitrust action — what is known as the "Iron Ore Conspiracy" — with a long litigation history dating back to 1980. The parties in the district court were as follows:

The Pinney Dock Antitrust The Litton Industries Litigation Antitrust Litigation

Plaintiff: Pinney Dock Plaintiff: Litton Industries,

Transport Co. Inc. ("Litton")

("Pinney Dock")

Co-Defendants: Penn Co-Defendants: Penn

Central Corp. Central and BLE

("Penn Central"); and

Bessemer Lake Erie

R.R. Co. ("BLE")

Because Penn Central was in bankruptcy during much of the time that these cases were litigated, the Pinney Dock and Litton plaintiffs (collectively, "plaintiffs") were afforded relief against BLE alone. Ultimately, plaintiffs settled with BLE for an amount close to $30 million dollars. Believing that co-defendant Penn Central should pay a proportionate share of the settlement monies, BLE filed multiple cross-claims in the district court for indemnification and contribution from Penn Central. The district court denied such relief; this appeal resulted. BLE is now the appellant and Penn Central the appellee. For the reasons that follow, we find in favor of Penn Central, and therefore affirm.

I.

After years of litigation, resulting in a multi-district litigation jury trial (the "MDL-587" proceeding was tried in the Eastern District of Pennsylvania), BLE was found liable for approximately $600 million in damages. That amount was reduced in settlement, with regard to the Pinney Dock and Litton plaintiffs, to approximately $30 million. The two consolidated appeals now before us concern BLE's efforts to collect some or all of that multi-million dollar sum from Penn Central via cross-claims asserting state and federal theories of contribution and indemnification.

BLE initially filed four cross-claims against Penn Central for: (1) indemnification under federal law; (2) indemnification under Ohio law; (3) contribution under federal law; and (4) contribution under Ohio law. The first three of these cross-claims were dismissed by Judge Thomas — the district judge then presiding over this matter — in 1982. That left remaining for review just BLE's fourth cross-claim, i.e., contribution under Ohio law. The parties then filed motions relative to this remaining cross-claim. BLE sought a voluntary dismissal of the claim under Fed.R.Civ.P. 41(a)(2), so that the claim could be re-filed in state court (the Ohio Court of Common Pleas); the state court was where BLE, proceeding as a plaintiff, had originally sought recovery of some or all of the $30 million dollars it had paid out to the Pinney Dock and Litton plaintiffs. Penn Central — acting on the assumption that Judge Thomas would deny the motion for voluntary dismissal and retain jurisdiction over BLE's state law contribution cross-claim — filed a motion for summary judgment against that claim.

Prior to his retirement from judicial service in late 1997, Judge Thomas denied the motion for voluntary dismissal, ruling, inter alia, that dismissal of the cross-claim was not mandated by the supplemental jurisdiction statute, 28 U.S.C. § 1367, or United Mine Workers v. Gibbs, 383 U.S. 715 (1966). That decision kept the cross-claim before the district court, thus necessitating a ruling on Penn Central's motion for summary judgment. Thereafter, the case was transferred to Judge Economus, who granted Penn Central's summary judgment motion in January 1998, thus terminating the case upon the district court's docket.

This appeal challenges Judge Thomas's 1982 Dismissal Order premised upon Rule 12(b)(6), Judge Thomas's 1997 Voluntary Dismissal Order premised upon Fed.R.Civ.P. 41(a)(2), and Judge Economus's 1998 Summary Judgment Order premised upon Fed.R.Civ.P. 56. On appeal, BLE argues that the district court erred by: (1) dismissing in the 1982 Order BLE's state and federal indemnification cross-claims against Penn Central; (2) denying in the 1997 Order BLE's motion to dismiss voluntarily its last remaining cross-claim, i.e., its cross-claim for contribution from Penn Central under Ohio law; and (3) finding in the 1998 Order that BLE is not entitled to contribution under Ohio Rev. Code § 2307.32(A) because BLE intentionally caused injury to Pinney and Litton. These issues are addressed in turn.

II. A. Dismissal of BLE's Three Cross-Claims (The 1982 Order)

Judge Thomas's 1982 Order dismissed under Fed.R.Civ.P. 12(b)(6) BLE's cross-claims against Penn Central for indemnification under federal law, indemnification under state law, and contribution under federal law. Although BLE initially challenged the dismissal of all three cross-claims, BLE clarified at oral argument that it no longer appeals the dismissal of its cross-claim for contribution under federal law. Accordingly, we need only review Judge Thomas's dismissal of BLE's indemnification cross-claims brought under federal and state law.

The granting of a Rule 12 dismissal motion is reviewed de novo using the same motion to dismiss standard applied in the district court. Performance Contracting, Inc. v. Seaboard Sur. Co., 163 F.3d 366, 369 (6th Cir. 1998). In ruling on a Rule 12(b)(6) motion for failure to state a claim upon which relief can be granted, the factual allegations in the complaint must be taken as true and construed in a light most favorable to the plaintiff (in this case, in a light most favorable to BLE). Morgan v. Church's Fried Chicken, 829 F.2d 10, 12 (6th Cir. 1987). Denial of the motion is proper "unless it can be established beyond a doubt that the plaintiff can prove no set of facts in support of his claim which would entitle him to relief." Achterhof v. Selvaggio, 886 F.2d 826, 831 (6th Cir. 1989) (citing Conley v. Gibson, 355 U.S. 41, 45-46 (1957)). See also Broyde v. Gotham Tower, Inc., 13 F.3d 994, 996 (6th Cir. 1994).

As both parties agree, this issue is controlled by this Court's recent decision in Wills Trucking, a companion indemnification case between BLE and Penn Central . See supra note 1. At the time the briefs were filed in this case, Wills Trucking had been argued, but had not yet been decided. The Wills Trucking holding, however, makes clear that indemnification under federal and state law is not permitted between joint tortfeasors, and "is available only when the party seeking indemnification is an innocent actor whose liability stems from some legal relationship with the truly culpable party. . . ." Wills Trucking, 1999 WL 357775, at *3(citing Ohio Cas. Ins. Co. v. Ford Motor Co., 502 F.2d 138, 140 (6th Cir. 1974)). The Wills Trucking panel held that BLE was not such an "innocent actor" because BLE was found by the MDL-587 jury to have knowingly, voluntarily and intentionally participated in the Iron Ore conspiracy, see id. at *2; and that finding was affirmed by the Third Circuit Court of Appeals, see id. The Wills Trucking panel thus affirmed the district court's Rule 12(b)(6) dismissal of BLE's indemnification claims filed against Penn Central. See id. at *5.

Recognizing that the Wills Trucking holding applies with equal force in this case, we find that BLE's federal and state indemnification cross-claims against Penn Central fail here as well. Judge Thomas thus acted correctly in dismissing those claims under Rule 12(b)(6), and his 1982 Order merits affirmance.

B. Denial of BLE's Motion for Voluntary Dismissal (The 1997 Order)

BLE next argues, in reliance upon Musson Theatrical, Inc. v. Federal Express Corp. ( "Musson") , 89 F.3d 1244 (6th Cir. 1996), as amended, 1998 WL 117980 (6th Cir. Jan. 15, 1998), that Judge Thomas abused his discretion by denying BLE's Fed.R.Civ.P. 41(a)(2) motion to dismiss voluntarily its state law contribution cross-claim filed against Penn Central. A district court's decision to deny a Rule 41(a)(2) motion is reviewed for an abuse of discretion. Grover v. Eli Lilly Co., 33 F.3d 716, 718 (6th Cir. 1994).

BLE argues that the district court had no choice but to dismiss the supplemental cross-claim once the court resolved the federal claims over which it had original jurisdiction ( i.e., the federal antitrust claims, which were settled between plaintiffs and BLE). We disagree. Although Judge Thomas could have dismissed the cross-claim once the federal-question claims were resolved, see 28 U.S.C. § 1367(c)(3) (authorizing such a dismissal without prejudice), he was, as Musson instructs, not obligated to do so. Judge Thomas acted within his discretion for several reasons. As a preliminary matter, this is not a narrow question, for district courts have "broad discretion in deciding whether to exercise supplemental jurisdiction over state law claims." Musson, 89 F.3d at 1254. Musson also clarifies that the district judge's broad discretion depends on "judicial economy, convenience, fairness, and comity." Id. (quoting Carnegie-Mellon Univ. v. Cohill, 484 U.S. 343, 350 (1988)). Each of these factors weighed in favor of Judge Thomas denying BLE's motion and retaining jurisdiction over BLE's cross-claim, given that the Judge had presided over the case for more than fifteen years at the time the dismissal was sought, and was intimately familiar with the parties and the proceedings. Additionally, this is not a case that falls under either of the two procedural scenarios outlined in Musson: dismissal under Fed.R.Civ.P. 12(b)(1) or 12(b)(6). Musson instructs that, where dismissal occurs under Rule 12(b)(1) and on subject matter jurisdiction grounds, dismissal of a remaining supplemental state law claim must occur because jurisdiction over that claim never existed in the first place. See Musson, 89 F.3d at 1255. Where, on the other hand, dismissal occurs under Rule 12(b)(6) for failure to state a claim, a "strong presumption" arises in favor of dismissing a remaining supplemental state law claim because Rule 12(b)(6) dismissals typically occur "early in the proceedings, when the court has not yet invested a great deal of time into resolution of the state claim." Id. BLE argues that one or both of these procedural scenarios should be found to control here, but neither applies. As is noted above, plaintiffs' underlying antitrust claims were settled on the merits, not dismissed on lack of jurisdiction grounds or for failure to state a claim.

BLE also argues that equitable considerations — especially the existence of its Common Pleas case in the Ohio courts — should have "tipped the scales" in favor of granting its Rule 41 motion. Again, we disagree. Musson provides for the retention of otherwise dismissible supplemental state law claims (and thus a rebutting of the "strong presumption") whenever "unusual circumstances" exist — circumstances without which, for example, the case might be "relegat[ed] . . . for trial in the state court." Musson, 89 F.3d at 1255 (quoting Nolan v. Meyer, 520 F.2d 1276, 1280 (2d Cir. 1975)). Such unusual circumstances include, among others, instances where the court and parties "spent years preparing" the case for trial. Id. (quoting Purgess v. Sherrock, 33 F.3d 134, 139 (2nd Cir. 1994)). That is precisely what occurred here: although Pinney Dock and Litton filed their complaints in 1980 and 1981, respectively, the MDL-587 verdict was not rendered until 1989, more than eight years later. See In re Lower Lake Erie Iron Ore Antitrust Litig., 759 F. Supp. 219, 222-23 (E.D. Pa. 1991) ( aff'd in part, rev'd in part, 998 F.2d 1144 (3d Cir. 1993); compare Musson, 89 F.3d at 1255-56 (finding no "unusual circumstances" shown where case was litigated in less than six months). While, admittedly, the Musson panel found "extremely compelling" the existence of a state court case at the time dismissal was considered by the district court, Musson, 89 F.3d at 1256, the "unusual circumstances" analysis, when viewed together with the "judicial economy, fairness, convenience and comity" factors, outweighs that consideration. Judge Thomas thus did not abuse his discretion by denying BLE's Rule 41(a)(2) motion for voluntary dismissal.

C. Summary Judgment against BLE's State Law Contribution Cross-Claim (The 1998 Order)

We last turn to Judge Economus's 1998 Order granting summary judgment in favor of Penn Central on the merits of BLE's state law contribution cross-claim. Judge Economus found that BLE could not obtain contribution from Penn Central under Ohio law because BLE was an intentional tortfeasor. We review that summary judgment decision de novo using the same Rule 56 standard applied by the district court. Barrett v. Harrington, 130 F.3d 246, 251 (6th Cir. 1997), cert. denied, ___ U.S. ___, 118 S.Ct. 1517 (1998).

That standard is as follows: A motion for summary judgment should be granted if the evidence submitted to the district court demonstrates that there is no genuine issue as to any material fact, and the movant is entitled to judgment as a matter of law. See Fed.R.Civ.P. 56(c); see also Celotex Corp. v. Catrett, 477 U.S. 317, 322 (1986); Anderson v. Liberty Lobby, Inc., 477 U.S. 242, 247 (1986). "[S]ummary judgment will not lie if the dispute about a material fact is `genuine,' that is, if the evidence is such that a reasonable jury could return a verdict for the non-moving party." Anderson, 477 U.S. at 248. The court's function is not to weigh the evidence and determine the truth of the matters asserted, "but to determine whether there is a genuine issue for trial." Id. at 249. The relevant inquiry is "whether the evidence presents a sufficient disagreement to require submission to a jury or whether it is so one-sided that one party must prevail as a matter of law." Id. at 251-52.

BLE sought contribution from Penn Central under Ohio Rev. Code § 2307.32(A), which provides, in relevant part, that "[t]here is no right of contribution in favor of any tortfeasor who intentionally has caused or intentionally has contributed to the injury or loss [in question]. . . ." This statute has been interpreted to mean precisely what it says, i.e., that intentional tortfeasors causing a plaintiff's harm cannot recover contribution under § 2307.32(A). See, e.g., Klosterman v. Fussner, 651 N.E.2d 64, 68 (Ohio Ct.App. 1994) (referencing Ohio Rev. Code § 2307.31(A), now renumbered as § 2307.32(A)). Under Ohio law, civil conspiracy is an intentional tort. See Williams v. Aetna Fin. Co., 700 N.E.2d 859, 868 (Ohio 1998), cert denied, 119 S.Ct. 1357 (1999). Relief is thus foreclosed by Wills Trucking, where BLE was found to have participated in the Iron Ore conspiracy, thereby intentionally causing plaintiffs' antitrust injuries. Accordingly, § 2307.32(A) bars BLE's state law contribution cross-claim against Penn Central, and Judge Economus's summary judgment finding merits affirmance.

III. Conclusion

The district court's three rulings, therefore, are each AFFIRMED.