Homestake Mining Company (Homestake) appeals from the district court’s 1 denial of its motion to vacate a labor arbitration award that reinstated Stacy Oberle, a Homestake employee who was discharged for alleged safety violations. Homestake contends that the award failed to draw its essence from the collective bargaining agreement and that the award should be set aside as contrary to public policy. We affirm.
I.
Oberle was a welder in the maintenance department at the Homestake gold mine in Lead, South Dakota, where Oberle had worked in various positions for sixteen years. The relevant collective bargaining agreement authorized Homestake to discharge employees “for just cause,” and incorporated by reference federal mine safety regulations as workplace safety rules in the' mine. Collective Bargaining Agreement at 4, 36, reprinted in Homestake’s App. at 54, 86.
On March 29, 1996, Oberle began constructing a metal cart to carry a fifty-five gallon barrel of oil and other lubricants used in the mine. Oberle’s welding bench was located approximately ten to twenty feet from the barrel, and the construction of the cart required Oberle to move frequently between the barrel and the welding bench to check his measurements. As the cart’s frame was nearly completed, Oberle carried the frame over to the barrel to see if the frame fit properly. While resting the frame on top of the barrel, Oberle tack welded two small corner pieces to the frame, and then returned the frame to his welding bench to weld those pieces permanently into place.
A supervisor saw Oberle at work and instructed Oberle to refrain from using the barrel as a welding stand. Oberle complied. On April 2, 1996, Homestake suspended Oberle and charged him with violating two mine safety regulations: (1) a welding safety curtain regulation, requiring that “[wjelding operations shall be shielded when performed at locations where arc flash could be hazardous to persons,” 30 C.F.R. § 57.14213(a) (1995); and (2) a ventilation regulation, requiring proper ventilation and cleaning “[bjefore welding, cutting, or applying heat with an open flame to ... containers that have contained flammable or combustible liquids.” 30 C.F.R. § 57.4604 (1995). Homestake assessed Oberle disciplinary “points” for each violation, putting Oberle over the limit beyond which he could be terminated. After an investigation, Oberle was terminated on April 4, 1996.
Pursuant to the collective bargaining agreement, the parties submitted this dispute to an arbitrator to determine whether Home- *680 stake had just cause to fire Oberle. The arbitrator held that Homestake’s evidence was insufficient to prove that Oberle had violated the welding curtain regulation. The arbitrator, also held that Oberle had not violated the ventilation regulation because “[t]he record in this hearing compels a finding that [Oberle] was not welding to the barrel. To the contrary, he was welding on the cart parts which he had positioned on the barrel.” Arbitrator’s Decision and Award (Oct. 21, 1996) at 14, reprinted, in Homestake’s App. at 19. Accordingly, the arbitrator held that Homestake did not have just cause to terminate Oberle and ordered Homestake to expunge the disciplinary points from his record •and to reinstate Oberle with back pay, The district court denied Homestake’s subsequent motion to vacate the award. Homestake now appeals.
II.
The district court’s denial of a motion to vacate an arbitration award, is not entitled to any special deference on appeal, and this Court reviews its conclusions of law de novo.
Kiernan v. Piper Jaffray Cos.,
Homestake contends that, because the collective bargaining agreement empowered Homestake to discipline employees without subjecting its decision to grievance procedures, the arbitrator lacked the authority to resolve this dispute. We disagree. An arbitrator’s award must be enforced “as long as he is arguably construing or applying the [collective bargaining agreement]” rather than “dispensing] his own brand of industrial justice.”
Midwest Coca-Cola Bottling Co. v. Allied Sales Drivers, Local 792,
Homestake further contends that enforcing the arbitrator’s award would be contrary to both a general public policy in favor of mine safety and a specific public policy in favor of keeping flames away from combustible materials. Again, we disagree. An arbitration award cannot be overturned on public policy grounds unless “it is contrary to a well-defined and dominant policy embodied in laws and judicial precedent.”
PaineWebber, Inc. v. Agron,
Accordingly, we affirm the district court’s denial of Homestake’s motion to vacate the arbitration award. The appellees’ motion for attorneys’ fees and double costs is denied.
Notes
. The Honorable Richard H. Battey, Chief Judge, United States District Court for the District of South Dakota.
