William J. Brennan, Jr.

“ Judges are to fix their sights primarily to make that appraisal and, if that test is met, are bound to find that a case for the jury is made out whether or not the evidence allows the jury a choice of other probabilities.' We have considered the remaining questions, not passed upon by the Court of Appeals, and find them to be unsubstantial. ”

“ It does not matter that, from the evidence, the jury may also with reason, on grounds of probability, attribute the result to other causes, including the employee's contributory negligence. Judicial appraisal of the proofs to determine whether a jury question is presented is narrowly limited to the single inquiry whether, with reason, the conclusion may be drawn that negligence of the employer played any part at all in the injury or death. ”

“ It is conceded that the clinker in the roadbed created a hazardous condition giving rise to respondent's liability under the Act if the proofs raised a jury question of respondent's alleged negligence in causing or permitting the clinker to be there. The Court of Appeals viewed the evidence as insufficient to raise a jury question because the petitioner did not adduce proofs showing what standard procedures were followed to prevent large clinkers from being used in road ballast and in inspecting roadbeds for hazards to firm footing. ”