of the arbitration award. In an initial Memorandum Opinion, the district court denied Packers’ motion for judgment on the pleadings. Amalgamated Meat Cutters Local 195 v. Cross Bros. Meat Packers, Inc., 362 F.Supp. 127 (E.D.Pa.1973). In a second opinion, the court granted the defendant’s motion for summary judgment. Amalgamated Meat Cutters Local 195 v. Cross Bros. Meat Packers, Inc., 372 F.Supp. 1274 (E.D.Pa.1974). Local 195 timely appealed from the district court’s judgment in favor of Packers.
I.
The first issue raised by Local 195 is whether Packers’ claim for damages caused by the picketing was arbitrable.6 Both parties agree that this issue is for the courts to decide. John Wiley & Sons, Inc. v. Livingston, 376 U.S. 543, 546—47, 84 S.Ct. 909, 11 L.Ed.2d 898 (1964); Local 616, Int. U. of E., R. & M. Wkrs. v. Byrd Plastics, Inc., 428 F.2d 23, 25 (3d Cir. 1970).
It is helpful to divide the dispute into two parts, damages caused by the refusal of members of the boning and slaughtering units to cross the Supply unit’s picket line, and damages caused by the refusal of other persons to cross the picket line.
With respect to the first, we can begin with two generally accepted propositions: the union can bargain away the right of members of a collective bargaining unit it represents to hon- or lawful picket lines; and, therefore, the question whether that right has been bargained away may be an arbitrable question.
NLRB v. Rockaway News Supply Co., 345 U.S. 71, 73 S.Ct. 519, 97 L.Ed. 832 (1953);
Island Creek Coal Co. v.
United Mine Workers, 507 F.2d 650 at 652—653 (3d Cir. 1975). Both the slaughtering and the boning agreements included grievance-arbitration clauses which were called into play “[sjhould any difference arise between the parties hereto . . . as to the interpretation or application of this agreement,” and “[i]f a grievance arises.”
7 While these clauses did not specifically refer to disputes over the right of the employees to honor lawful picket lines, they were contained in the same articles that contained sweeping no-strike clauses. It is, therefore, natural to infer that the scope of the no-strike clauses was a proper subject of arbitration, particularly in the light of the strong policy favoring the peaceful resolution of labor disputes through arbitration. See
Steelworkers v. Warrior & Gulf Navigation Co., 363 U.S. 574, 80 S.Ct. 1347, 4 L.Ed.2d 1409 (1960);
NAPA Pittsburgh, Inc. v. Automotive Chauffeurs Local 926, 502 F.2d 321, 323 (3d Cir.),
cert. denied, 419 U.S. 1049, 95 S.Ct. 625, 42 L.Ed.2d 644 (1974). Since this court recently held that the question whether the union had relinquished the right to cross picket lines was arbitrable, even in the absence of any no-strike provision,
Island Creek Coal Co. v. United Mine Workers, supra, it would be anomalous to reach a different result in this case, where both collective bargaining agreements contained strong no-strike clauses which were tied directly to the grievance-arbitration mechanism.
The arbitrator’s award extend- . ed beyond the damages caused by the actions of the slaughtering and boning employees, however. His award also encompassed the damages caused by the refusal of persons not represented by Local 195 to cross the Supply picket lines.8 Apparently, the arbitrator included these damages because he found that
6
Packers contends that this issue was not presented to the district court. Appellee’s Brief at 9. We agree with Local 195 that it argued the issue before the district court. See Memorandum of Law in Support of Plaintiffs Motion, App. 183a-84a.