Noting the undesirability of determining the conscious objective of a union in obtaining the inclusion of a challenged provision in a collective bargaining agreement on a bare stipulation of facts which supplies no indication of purpose or intention beyond the language of the provision and the general bargaining history
In Pacific Northwest, where it was undisputed that the workers were engaged in on-site work, the court recognized that "the construction industry proviso narrowed the geographical scope of the [rule allowing secondary tactics] by introducing the job-site limitation."
In A. Duie Pyle we noted that it is "undesirable to determine the conscious objective of a union in obtaining the inclusion of a challenged provision... on a bare stipulation of facts."