This is an appeal from the decision of the United States District Court for the District of Maine. Appellants contend that the district court incorrectly granted summary judgment on the basis that their claims under the Federal Employers’ Liability Act (FELA), 45 U.S.C. § 51 et seq., were time barred. We affirm.
I. FACTS
On July 30, 1987, 49 former or current railroad employees, including the appellants, commenced this action. Five of the original ten appellants prosecuting this appeal were dismissed.
See Lawrence Albert, et al. v. Maine Central Railroad Co., et al.,
A. Bickford
Russell S. Bickford testified that the first time he knew he suffered from hearing loss was when he took a hearing test in 1980. When asked if, in 1980, he thought his slight hearing loss resulted from his work at the railroad, appellant Bickford responded in the affirmative.
B. Brannen
After being asked if he had noticed that he had a hearing loss, and responding in the affirmative, Walter Brannen then testified that he had realized that he had a hearing loss for about ten years. He said that he suspected that the hearing loss resulted from the noise he was exposed to every day at the railroad and that he had this suspicion since he first noticed his hearing loss in 1978.
C. Fitton
Kenneth Fitton stated that he first noticed his hearing loss during the last five years, and that approximately five years ago, in 1983, he linked his work with the railroad to his hearing loss.
D. Hamilton
Edward T. Hamilton stated that he remembered having a hearing loss after the first time he had a whistle from a railroad engine blown in his ear in 1971. He stated in 1975 he attributed his hearing problems to the railroad.
E. Hunt
Alan D. Hunt began noticing a hearing loss approximately ten to fifteen years ago. *543 His wife attributed his hearing loss to his work at the railroad and told Hunt her opinion about ten years ago in 1978. At that time, Hunt agreed with his wife as to the work at the railroad being the cause of his hearing loss.
II. STANDARD OF REVIEW
Upon review of a grant of summary judgment, we employ the same standard of review as the district court. 10 C. Wright, A. Miller & M. Kane,
Federal Practice and Procedure,
§ 2716 at 643 (1983). Summary judgment is proper when there is “no genuine issue as to any material fact and the moving party is entitled to a judgment as a matter of law.” Fed.R.Civ.P. 56(c). We consider the undisputed facts in the pleadings, affidavits, and exhibits in the light most favorable to the nonmovant.
See, e.g., Kennedy v. Josephthal & Co., Inc.,
III. DISCUSSION
FELA provides that “[n]o action shall be maintained under this chapter unless commenced within three years from the day the cause of action accrued.” 45 U.S.C. § 56. The method of determining when an action accrues is not set by the statute. Rather, courts must interpret the term keeping in mind the purpose of the provisions and the practical ends to be served by a period of limitations.
Reading Co. v. Koons,
[pjrotect defendants and the courts from having to deal with cases in which the search for truth may be seriously impaired by the loss of evidence, whether by death or disappearance of witnesses, fading memories, disappearance of documents, or otherwise.
Id.
Ordinarily, it is clear from the circumstances of the injury when the statute of limitations begins to run. Sometimes, however, as in the case at bar, a plaintiff may be unaware when the injury actually occurs. In those instances, courts apply a “discovery rule” to determine when the statute begins to run.
See Kubrick,
The Supreme Court first set forth the discovery rule in
Urie v. Thompson,
In
United States v. Kubrick, supra,
the Court addressed the accrual of a cause of action for medical malpractice brought under the Federal Torts Claim Act. The plaintiff argued that his cause of action should not accrue until he knew of his injury and its cause, and knew that the party causing the injury was legally blameworthy. Although the
Kubrick
court re
*544
jected the last requirement of legal blame, it did not specifically address the issue of whether a plaintiff needed to know of the injury’s cause for the purpose of determining accrual.
Id.
Although the United States -Supreme Court has not spoken on this issue since its decision on
Kubrick,
several courts of appeals have interpreted
Urie
and
Kubrick
as setting forth the parameters of the discovery rule. These courts have held that the statute of limitations begins to run when the employee becomes aware not only of his disease but also of its cause.
Townley v. Norfolk & Western Ry. Co.,
We have not yet specifically ruled on this issue. The district court, adopting the reasoning of the aforementioned circuit courts, held that the three year statute of limitations began to run when the appellants knew, or should have known, of their hearing loss and its cause.
See Dubose v. Kansas City Southern Ry. Co.,
Appellants contend, however, that the statute of limitations cannot begin running until an injured party has “definite knowledge” that his injury is work related.
Aerojet-General Shipyards, Inc. v. O’Keeffe,
We disagree, finding the district court’s analysis, which imparts a requirement of diligence, more appropriate. As stated in Dubose:
[W]e think that the Court intended the discovery rule to be applied in differing fact situations to effectuate the rationale behind the rule. In most cases a plaintiff will have actual knowledge of his injury no later than the time when he should have known he was injured. The discrepancy may be greater, however, between actual knowledge and constructive knowledge of the fact of causation. When a plaintiff may be charged with awareness that his injury is connected to some cause should depend on factors including how many possible causes exist and whether medical advice suggests an erroneous causal connection or otherwise lays to rest a plaintiff’s suspicion regarding what caused his injury.
Id. at 1031.
Once each appellant reached the conclusion that he believed he had a hearing loss and that he believed that the injury was caused by his employment, we find that he had a duty to investigate the situation in order to confirm or deny his belief. This is especially true here where the appellants thought they knew the cause of their injury. To hold otherwise would essentially render the FELA statute of limitations meaningless.
Aerojet
is entirely distinguishable. There, the court found that the statute of limitations was tolled until the plaintiff received a definitive medical diagnosis, but only in view of the fact that the plaintiff’s self-diagnosis was expressly rejected by several physicians who told him that his injury was not work-related.
Aerojet-General Shipyards, Inc. v. O’Keefe,
As for appellants’ claim that their uncon-tradicted deposition testimony is insufficient grounds by itself to support the district court’s findings, again we disagree. A party against whom summary judgment has been requested “may not rest upon the
*545
mere allegations or denials of [his] pleadings, but [his] response, by affidavits or as otherwise provided in this role, must set forth specific facts showing that there is a genuine issue for trial.” Fed.R.Civ.P. 56(e).
Herbert v. Mohawk Rubber Co.,
Affirmed.
