Harold Hitz Burton,
Mastro Plastics Corp v. National Labor Relations Board…
“ While in a particular case the cause of a strike may be clear, and in a particular case there may be no controversy regarding the circumstances which prove that an employer committed an unfair labor practice, as a matter of experience that is not always true, indeed often it is not true. One of the sharpest controversies, one of the issues most difficult of determination, is the very question of what precipitated a work stoppage. ”
