Oil, Chemical & Atomic Workers International Union Local No. 4-23 v. American Petrofina Company of Texas

JERRE S. WILLIAMS, Circuit Judge:

Appellants Oil, Chemical and Atomic Workers International Union Local No. 4-23, and Leo Max Hildabridle, Jr. contend that appellee American Petrofina Company of Texas must submit to arbitration their dispute over the propriety of Petrofina’s discharging an economic striker because of alleged improper conduct on the picket line. Petrofina counters that it has no obligation to undertake arbitration because its collective bargaining agreement with the Union expired before it fired the worker and because the new agreement does not apply retroactively. After a…