Third, Fort Pitt argues that paragraph 142, which provides that any grievance tha.t arose prior to March 3, 1975 will be subject to the grievance and arbitration procedures of the 1975 Agreement, indicates by negative implication that the parties intended that grievances arising after the March 3,1978 expiration date would not be subject to arbitration under the 1975 Agreement. We are not convinced that this provision provides any indication of the parties’ intent as to the status of the arbitration clause during the period between the expiration of the 1975 Agreement and the institution of a new collective bargaining agreement. Even if it can be said to provide some indication of the parties’ intent, it is not the “clear implication” that the Nolde Court considered sufficient to rebut the presumption of arbitrability. Therefore, we conclude that the parties to the 1975 Agreement did not indicate, either expressly or by clear implication, that the arbitration clause would not survive termination of the Agreement.
B.
Fort Pitt also argues that the prolonged strike by the Union distinguishes this case from Nolde and dictates that Fort Pitt should not be compelled to arbitrate these grievances. Fort Pitt bases this argument on the theory that the no-strike clause is the quid pro quo for the agreement to arbitrate. See e. g., Gateway Coal Co. v. UMW, 414 U.S. 368, 382, 94 S.Ct. 629, 639, 38 L.Ed.2d 583 (1974); Textile Workers Union v. Lincoln Mills, 353 U.S. 448, 455, 77 S.Ct. 912, 917, 1 L.Ed.2d 972 (1957). Fort Pitt contends that arbitration is the preferred method for settling disputes in lieu of resort by a union to economic force via strike. Because the Union used its strongest economic weapon, the strike, Fort Pitt argues that it no longer should be bound by the arbitration clause.
This substantial argument brings into focus the difficulty of reconciling the rationale of Nolde with those cases that hold that a federal court may enjoin a strike under section 301 on the condition that the employer submit to arbitration over the grievance in question. See, e. g., Boys Markets, Inc. v. Retail Clerks Local 770, 398 U.S. 235, 90 S.Ct. 1583, 26 L.Ed.2d 199 (1970). If the arbitration clause survives termination under Nolde and the coterminous no-strike clause does not, the employer remains bound to arbitrate, although it is deprived, in part at least, of the consideration flowing to it from its agreement to arbitrate, i. e. the no-strike clause.2
Under the circumstances of this case, however, resolution of this difficult question is not necessary. The premise underlying Fort Pitt’s argument is that the Union, by striking, “demonstrated that the [1975 Agreement] no longer constrained the Union to settle disputes only by arbitration, and, therefore, the Union waived whatever right it may have had to arbitrate this dispute after the expiration of the contract.” Therefore, Fort Pitt argues that it should not be compelled to fulfill its concomitant promise to arbitrate. If, however, the Union’s strike did not violate the no-strike clause-assuming for the moment that the clause survived contract expiration-then Fort Pitt’s argument is not persuasive. Fort Pitt did not address, either on this appeal or before the district court, this crucial point: Whether the Union’s strike in this case would have violated the no-strike clause if it had survived contract expiration. Instead, Fort Pitt seems to rely on the argument that the Union, by engaging in an economic strike in support of its bargaining position, waived its right to compel arbitration, regardless of whether the no-strike clause was -intended to reach such a strike. We cannot accept this broad waiver argument. In our view, under the quid pro
2
The National Labor Relations Board recently confronted this problem and it held that the no-strike clause survives contract termination “to the [same] extent as the duty to arbitrate over issues created by or arising out of the expired contract.” Goya Foods, Inc., 238 N.L.R.B. No. 204, 1978-1979 NLRB Dec. (CCH) 15,078 (Sept. 29, 1978). The Board reasoned that it would be anomalous to subject an employer to economic pressure while still requiring it to arbitrate the grievance over which the employees were striking.