Thomas McDaniel v. Terex Reedrill , 466 F. App'x 365 ( 2012 )


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  •      Case: 10-31264       Document: 00511823414         Page: 1     Date Filed: 04/16/2012
    IN THE UNITED STATES COURT OF APPEALS
    FOR THE FIFTH CIRCUIT  United States Court of Appeals
    Fifth Circuit
    FILED
    April 16, 2012
    No. 10-31264                        Lyle W. Cayce
    Clerk
    THOMAS ALLEN MCDANIEL,
    Plaintiff–Appellant
    v.
    TEREX USA, L.L.C., doing business as Terex Drills, formerly known as Terex
    Reedrill,
    Defendant–Appellee
    Appeal from the United States District Court
    for the Western District of Louisiana
    USDC No. 5:09-CV-01721
    Before BENAVIDES and PRADO, Circuit Judges, and ALVAREZ,* District
    Judge.
    EDWARD C. PRADO, Circuit Judge:**
    Plaintiff–Appellant Thomas Allen McDaniel brought this products liability
    action against Defendant–Appellee Terex Drills (“Terex”) for injuries he suffered
    when a drill bit, attached to an auger drill, crushed him. McDaniel had moved
    under the drill bit to pull out a stake, whereupon—according to McDaniel—the
    *
    District Judge of the Southern District of Texas, sitting by designation.
    **
    Pursuant to 5TH CIR. R. 47.5, the court has determined that this opinion should not
    be published and is not precedent except under the limited circumstances set forth in 5TH CIR.
    R. 47.5.4.
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    drill operator inadvertently activated a mechanism known as the inner kelly
    float pedal, which caused the bit to free fall onto McDaniel. McDaniel sued
    under the Louisiana Products Liability Act (“LPLA”), arguing (i) that the drill
    was defectively designed because the inner kelly float pedal, positioned near the
    operator’s feet and poorly guarded, was susceptible to inadvertent activation,
    and (ii) that Terex had inadequately warned against the hazard created by the
    poorly-positioned, poorly-guarded pedal. The case proceeded to trial, and after
    McDaniel presented his case on liability, the district court granted Terex’s Rule
    50(a) motion for judgment as a matter of law. For the reasons provided below,
    we AFFIRM the district court’s judgment with respect to McDaniel’s inadequate
    warning theory of liability, but REVERSE the district court’s judgment with
    respect to McDaniel’s design defect theory of liability.
    I. BACKGROUND
    A. Factual Background
    Terex manufactures the Texoma 800, a truck-mounted auger drill. Several
    features of the Texoma 800 are noteworthy. The drill operator of the Texoma
    800 sits on a swivel chair that is attached to an elevated platform located at the
    rear of the machine. While seated, the operator can drop the drill bit using
    either (i) a hand-lever on the control panel in front of him or (ii) a device known
    as the inner kelly float pedal, affixed to the platform on which his feet rest. The
    hand-lever enables the operator to raise or lower the inner kelly bar—to which
    the bit is attached—in a controlled fashion.       The float pedal, however, is
    designed to allow the operator to bypass such deliberate, manual maneuvering.
    Depressing the pedal will release the tension on the cables that hold up the
    inner kelly bar, thus allowing the bit to “float” in the hole being drilled. If the
    pedal is depressed while the bit is above ground, however, the inner kelly bar
    and the attached bit will fall free; by depressing and holding down the pedal
    with his foot, the operator will cause a bit that is suspended above ground to
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    crash to the ground. As soon as the operator lifts his foot, the inner kelly bar
    and attached bit will stop falling. Although the float pedal is positioned between
    two metal bars, there is no cover over it.
    It is also noteworthy that the Texoma 800 comes equipped with numerous
    warnings and instructions. A hodgepodge of warnings and instructions are
    fastened to the operator’s control panel. One placard warns: “WARNING: THE
    AREA WITHIN 15 FEET OF THE KELLY BAR OR MAST IS POTENTIALLY
    HAZARDOUS AND MUST BE KEPT CLEAR OF PERSONNEL WHENEVER
    POSSIBLE. FAILURE TO HEED THIS WARNING MAY RESULT IN BODILY
    INJURY FROM FLYING OBJECTS OR FALLING INTO THE EXCAVATION.”
    Another placard warns: “INNER KELLY FLOAT PEDAL[:] DO NOT FREE
    FALL.” Yet another placard warns: “BE SURE THE IMMEDIATE WORK
    AREA IS CLEAR [AND] ALL BYSTANDERS ARE AT LEAST 20 FEET AWAY
    BEFORE STARTING ENGINE OR OPERATING MACHINE.” And: “SWING
    AREA[;] KEEP CLEAR.” The operation and maintenance manual for the
    Texoma 800, too, contains warnings and instructions. One warning in the
    manual states: “The ‘Inner Kelly Float Pedal’ control is not to be used as a free-
    fall devise. Operation of this devise as a free-fall function can cause serious
    injury.” The manual also warns: “Do keep the area within 15 feet of the Kelly
    Bar clear of personnel.” And: “Keep all personnel at least 15 ft. (4.5 m) from the
    Kelly Bar when it is operating.”
    On September 10, 2008, the day of the accident, McDaniel was a ground-
    person on a three-man drilling crew for Lone Star Drilling Services (“Lone
    Star”). The crew was preparing to drill a cellar hole with a Texoma 800. The
    location of the planned hole was marked by a stake—a metal T-post. According
    to the testimony at trial, once the team centered the drill bit over the stake, the
    drill operator—Justin “Judd” Mims—instructed McDaniel to pull the stake from
    the ground. McDaniel testified that he shouted to Mims to “hold up,” and then
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    reached under the bit in an attempt to pull out the stake with one hand. When
    he could not remove the stake with one hand, he crawled under the bit and
    attempted to remove the stake with both hands. Mims testified that while
    McDaniel was attempting to remove the stake, Mims was not looking at him, but
    was instead looking at the drill’s mast to ensure that the machine was level.
    While McDaniel was under the bit attempting to remove the stake, and while
    Mims was looking away, the bit fell onto him. McDaniel testified that just before
    the bit fell onto him, from the corner of his eye, he saw Mims’s “feet rotating” as
    Mims “turned in the seat.” Brandon Woods, the third crew member, yelled to
    Mims to “pull up.” Mims complied, pulling up the bit and swinging it aside.
    Mims testified that he did not know what caused the bit to fall onto
    McDaniel, and that he did not know whether his foot had inadvertently hit the
    inner kelly float pedal. He also testified that the particular Texoma 800 that
    had injured McDaniel would often malfunction.               According to Mims,
    “sometimes,” “every now and then,” the bit on that particular machine would
    “unexpectedly” fall to the ground, even though he had not “touch[ed] anything.”
    Mims further testified that he had lodged “several” reports about the propensity
    of that Texoma 800's bit to fall, and that in response, mechanics had inspected
    and fixed the machine “several times.” Furthermore, Mims testified that the day
    after the accident, he tested the machine, confirmed that it was working, took
    the machine to a job site, and completed a job.
    Mims could not recall whether he had ever before inadvertently activated
    the pedal with his foot. Sanders testified that as operator, he would often “catch
    [himself]” inadvertently striking the pedal with his foot. He added that such
    inadvertent striking would happen “at least once” “on every job.” When that
    happened, the bit would fall two or three feet, depending on his reaction time.
    Also at trial, although McDaniel acknowledged that the crew might have
    executed another procedure to remove the stake—such as removing the stake
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    before the drill bit was raised, and then marking the spot—McDaniel insisted
    that the crew’s procedure that day was “standard operating procedure.” He
    testified: “[T]hat was the standard operating procedure with every single
    employee at that shop, as well as other companies that do the same work.”
    Additionally, McDaniel testified that ground-personnel would routinely get
    underneath the drill bit to “change the teeth” of the bit. The drilling process
    would break and distort the teeth of the bit; to fix the bit, the bit would be raised
    and ground-personnel would get underneath it to hammer out and weld broken
    teeth. McDaniel explained that these tooth changes were “standard operating
    procedure” and occurred “daily”: “You may go one or two days without having to
    change teeth, but generally in the East Texas area and western Louisiana,
    [given] the soil composition, you would have to change teeth daily. Sometimes
    three or four times a day.” Another witness—William E. Sanders, a former
    ground-person     and    operator    at    Lone    Star—likewise     testified   that
    ground-personnel would routinely go underneath suspended bits to change teeth.
    Although McDaniel conceded that he had been trained not to go under a
    suspended load, he stated that he had not been trained not to go under a
    suspended bit. But McDaniel confirmed that, at Lone Star, his supervisor Bryan
    McDaniel had instructed him “in passing” “not [to] go under that bit for [any]
    reason unless [McDaniel] just absolutely, positively, by no other choice, [had] to.”
    Regarding the Texoma 800's warnings and instructions, McDaniel testified that
    Terex had never provided him with a copy of the manual. Mims testified that
    he did not routinely follow the fifteen-foot rule.
    McDaniel called Dr. Stephen H. Batzer, a failure analyst and forensic
    engineer, as his expert witness.          Batzer testified that the machine was
    defectively designed and unreasonably dangerous because the inner kelly float
    pedal was not fully guarded. According to Batzer, the pedal was susceptible to
    inadvertent activation because it was placed on the platform, where the operator
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    naturally rests his feet, and which is not clearly visible and easily accessible to
    him—unlike his control panel.
    In addition, Batzer testified that “[i]t is an unreasonably dangerous
    machine because it is not responding to deliberate but rather accidental inputs
    by the operator, which is completely preventible in a low-tech, low-cost way. . . .
    [Y]ou can load a cover over that switch and still operate the machine just fine.”
    As for alternative design, Batzer specified that the design could be made safer
    by placing an “inverted C-shape guard” or shield over the pedal. According to
    Batzer, such a design was “industry standard” and would require the operator
    to “carefully put [his] foot in and elevate it onto the pedal.” Batzer also opined
    that the pedal could be relocated up from the platform.
    Batzer was cross-examined about whether the alleged design defect
    proximately caused McDaniel’s injury. Upon being asked whether it was correct
    that no witness had testified that the pedal had been depressed at any time,
    Batzer responded that “they said they didn’t know, which is different,” but
    agreed that there was no “expression of positive knowledge.” Upon being
    asked—“If [Mims] never touched the foot pedal, your alternative design doesn’t
    prevent this accident, correct?”—Batzer responded, “That’s a pretty big ‘if,’ but
    that’s true.” Finally, upon being asked whether it was possible that Mims
    inadvertently pushed the hand-lever too far, Batzer responded: “That did not
    happen, to a reasonable degree of engineering probability,” and “the probability
    of that is essentially zero, so no.”
    B. Procedural Background
    On August 26, 2009, McDaniel filed this LPLA action in the 42nd Judicial
    District Court, De Soto Parish, Louisiana. McDaniel alleged two theories of
    liability under the LPLA: first, that the drill was defectively designed because
    the inner kelly float pedal, positioned near the operator’s feet and poorly
    guarded, was susceptible to inadvertent activation; second, that Terex had
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    inadequately warned against the hazard created by the poorly-positioned,
    poorly-guarded pedal. On October 1, 2009, Terex filed a notice of removal on the
    basis of diversity. The case proceeded to a bifurcated trial in the United States
    District Court for the Western District of Louisiana.        The liability phase
    commenced on November 15, 2010. After McDaniel presented his liability case
    and rested, Terex moved for Rule 50(a) judgment as a matter of law. The district
    court granted the motion, observing that McDaniel had failed to adequately
    show that his use of the drill was reasonably anticipated. McDaniel appeals that
    judgment.
    II. STANDARD OF REVIEW
    Because federal jurisdiction in this case is based on diversity, we follow
    Louisiana’s substantive law, but we apply the federal standard of review. Patin
    v. Thoroughbred Power Boats, Inc., 294 F.3 d640, 647 n.12 (5th Cir. 2002). We
    review a district court’s grant of judgment as a matter of law de novo, applying
    the same legal standard that the district court used in first passing on the
    motion. McBeth v. Carpenter, 
    565 F.3d 171
    , 176 (5th Cir. 2009). “A district court
    may not grant a Rule 50(a) motion unless a party has been fully heard on an
    issue and there is no legally sufficient evidentiary basis for a reasonable jury to
    find for that party on that issue.” Hagan v. Echostar Satellite, LLC, 
    529 F.3d 617
    , 622 (5th Cir. 2008) (internal quotation marks omitted). A Rule 50(a) motion
    may be granted only if “the facts and inferences point so strongly and
    overwhelmingly in favor of one party that the Court believes that reasonable
    men could not arrive at a contrary verdict”; yet, if “reasonable and fair-minded
    [jurors] in the exercise of impartial judgment might reach different conclusions,
    the motions should be denied.” McBeth, 
    565 F.3d at 176
     (internal quotation
    marks omitted). “Under this standard, we view all the evidence in the light and
    with all reasonable inferences most favorable to the party opposed to the
    motion.” Hagan, 
    529 F.3d at 622
     (internal quotation marks omitted). “[I]t is the
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    function of the jury as the traditional finder of facts, and not the Court, to weigh
    conflicting evidence and inferences, and determine the credibility of witnesses.”
    
    Id.
     (internal quotation marks omitted). Although we review the record as a
    whole, we disregard evidence favorable to the moving party that the jury is not
    required to believe. Arismendez v. Nightingale Home Health Care, Inc., 
    493 F.3d 602
    , 606 (5th Cir. 2007).
    While our review is de novo, we have, on occasion, discouraged district
    courts from granting Rule 50(a) motions, indicating our preference for the
    practice of submitting the case to the jury and then passing on the sufficiency of
    the evidence on a post-verdict motion. See McPhillamy v. Brown & Root, Inc.,
    
    810 F.2d 529
    , 532 (5th Cir. 1987) (describing this practice as “highly desirable”
    and observing that “[t]he primary reason we encourage district courts to reserve
    judgment on motions for directed verdict is that if the court grants a judgment
    n.o.v., a retrial is avoided if we reverse the j.n.o.v. because there is a jury verdict
    that can be reinstated” (citations and internal quotation marks omitted)); Gomez
    v. St. Jude Medical Daig Div., Inc., 
    442 F.3d 919
    , 938 (5th Cir. 2006) (describing
    this practice as “prudent”); see also Unitherm Food Sys., Inc. v. Swift-Eckrich,
    Inc., 
    546 U.S. 394
    , 405 (2006) (“[T]he district courts are, if anything, encouraged
    to submit the case to the jury, rather than granting such motions.”).
    III. DISCUSSION
    The LPLA sets forth “theories of liability for manufacturers for damage
    caused by their products under Louisiana law.” La. Rev. Stat. § 9:2800.52. A
    product may be unreasonably dangerous in four exclusive ways, two of which are
    relevant here: first, a product may be “unreasonably dangerous in design”;
    second, a product may be “unreasonably dangerous because an adequate
    warning about the product has not been provided.” La. Rev. Stat. § 9:2800.54(B).
    Under the LPLA, “[t]he manufacturer of a product shall be liable to a claimant
    for damage proximately caused by a characteristic of the product that renders
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    the product unreasonably dangerous when such damage arose from a reasonably
    anticipated use of the product by the claimant or another person or entity.” La.
    Rev. Stat. § 9:2800.54(A). We have thus held that a plaintiff asserting a
    products liability action against a manufacturer faces a two-tiered threshold
    burden: “the plaintiff must show that (1) his damages were proximately caused
    by a characteristic of the product that renders it unreasonably dangerous, and
    (2) his damages arose from a reasonably anticipated use of the product.”
    Kampen v. Amer. Isuzu Motors, Inc., 
    157 F.3d 306
    , 309 (5th Cir. 1998) (en banc)
    (citing La. Rev. Stat. § 9:2800.54(D)).
    As discussed below, McDaniel introduced sufficient evidence for a
    reasonable jury to find that he satisfied the two-tiered threshold burden for his
    design defect theory of liability; with respect to his inadequate warning theory
    of liability, however, he failed to introduce legally sufficient evidence.
    A. Reasonably Anticipated Use
    1. Applicable Law
    Under the LPLA, a reasonably anticipated use is a “a use or handling of
    the product that the product’s manufacturer should reasonably expect of an
    ordinary person in the same or similar circumstances.”             La. Rev. Stat.
    § 9:2800.53(7). As we have explained:
    This objective inquiry requires us to ascertain what uses of its
    product the manufacturer should have reasonably expected at the
    time of manufacture. The LPLA’s “reasonably anticipated use”
    standard should be contrasted with the pre-LPLA “normal use”
    standard; “normal use” included all intended uses, as well as all
    reasonably foreseeable uses and misuses of the product. “Normal
    use” also included reasonably foreseeable misuse that is contrary to
    the manufacturer’s instructions.
    It is clear that by adopting the reasonably anticipated use standard,
    the Louisiana Legislature intended to narrow the range of product
    uses for which a manufacturer would be responsible. We know that,
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    under the LPLA, a manufacturer will not be responsible for every
    conceivable foreseeable use of a product.
    Kampen, 
    157 F.3d at
    309–10 (citations and internal quotation marks omitted);
    accord Payne v. Gardner, 
    56 So.3d 229
    , 231 (La. 2011).
    Given the factual similarity of Kampen to our case, we look toward
    Kampen to illuminate the issue of “reasonably anticipated use.” There, the
    plaintiff used a factory-supplied tire jack to raise the front end of a car and
    investigate a noise coming from beneath it. 
    157 F.3d. at 308
    . Suspecting that
    something was caught behind the front wheel, the plaintiff placed his head and
    shoulders beneath the front of the car to examine the back of the wheel. 
    Id. at 309
    . As the plaintiff was underneath the car, the jack gave way and the car
    crushed him. 
    Id.
     The plaintiff brought an LPLA action against the jack
    manufacturer for defective design. 
    Id. at 308
    . Although the plaintiff had not
    read the owner’s manual for the jack, it instructed the user to use the jack only
    when changing tires and warned the user never to get beneath the car when
    using the jack. 
    Id. at 309
    .
    In analyzing the threshold question of “reasonably anticipate use,”
    Kampen began by delineating the scope of the plaintiff’s conduct that comprised
    “use” under the LPLA. 
    Id. at 310
    . If the plaintiff’s conduct in jacking up the car
    constituted his entire “use” of the jack, then the plaintiff’s use of the jack would
    of course be reasonably anticipated—“a manufacturer quite reasonably
    anticipates his jack to be used for jacking!” 
    Id.
     However, if the plaintiff’s “use”
    of the jack included both (i) his act of jacking up the car and (ii) his subsequent
    act of crawling underneath the car, “then reasonably anticipated use becomes a
    closer question: manufacturers may or may not reasonably anticipate users of
    their products to disregard express warnings about the product and thereby
    place themselves in physical danger.” 
    Id.
     (emphasis omitted). We selected the
    latter conception of “use”—a conception of “use” broad enough to encompass
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    some of the plaintiff’s negligent conduct. 
    Id.
     at 311–12. We reasoned:
    [A] plaintiff may act in relation to a product in such a way that,
    while it does not change the physical stresses placed on a product,
    nevertheless increases the risk of injury associated with the
    product. A manufacturer is required to take these kinds of actions
    by product users into account when designing and providing
    warnings for its products.
    
    Id.
     We then elaborated:
    [The plaintiff] began using the jack when he elevated the car with
    it. When [he] finished jacking the car up, however, his use of the
    jack did not conclude. Thereafter, [he] used the jack by relying on
    the jack to hold the car in its elevated position. When [he] placed
    himself beneath the car, he was still using the jack: he was relying
    on the jack to hold the car above his body.”
    
    Id.
     Having defined the scope of the plaintiff’s use at a level of generality that
    included the plaintiff’s act of crawling under the car, we found that the plaintiff’s
    use of the jack was not reasonably anticipated. 
    Id. at 314
    . Our reasoning relied
    on both the warnings and the plaintiff’s failure to demonstrate that the operator
    should have been aware that customers were routinely using its jacks contrary
    to the warnings. 
    Id.
     We thus held:
    [W]here a manufacturer provides an express warning cautioning
    against the use of the product for which the product was neither
    designed nor intended, and where the plaintiff acts in direct
    contravention of that warning . . . the plaintiff’s ‘use’ of the product
    will not be a reasonably anticipated one unless . . . the plaintiffs had
    presented evidence that despite the warnings, the manufacturer
    should have been aware that operators were using the product in
    contravention of certain warnings.
    
    Id.
     (citations and internal quotation marks omitted) (emphasis added); see also
    
    id.
     at 315–18 (emphasizing that, to establish reasonably anticipated use,
    plaintiff who misuses product must present evidence that defendant knew or
    should have known that others were similarly misusing the product). Since
    Kampen, it has become well-settled that “plaintiffs who used a product in a
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    manner that violates clear and express warnings can show that their use was
    reasonably anticipated only by presenting evidence that the manufacturer had
    reason to know that these warnings were ineffectual.” Broussard v. Procter &
    Gamble Co., 
    517 F.3d 767
    , 770 (5th Cir. 2008). In Broussard, for example,
    although the defendant-manufacturer of a heatwrap warned users not to use the
    heatwrap on areas of the body that lacked sensitivity to heat, the plaintiff
    nonetheless used the heatwrap on an area that was insensitive to heat due to a
    medical condition. 
    Id.
     at 769–70. We rejected the plaintiff’s LPLA claim and
    affirmed summary judgment for the defendant because the plaintiff had “failed
    to present even one scintilla of evidence that [the defendant] knew or should
    have known that despite the warnings” consumers were similarly misusing the
    heatwrap. 
    Id. at 770
    .
    2. Application
    Applying the framework of Kampen to our case, we first define the “use”
    of the drill here to include both (i) the crew’s act of using the drill to raise the
    drill bit and (ii) McDaniel’s subsequent act of reaching under the raised bit to
    pull out the stake—just as the use of the jack in Kampen included both the act
    of using the jack to raise the car and the plaintiff’s subsequent act of crawling
    under the raised car to investigate something behind the wheel. To be sure,
    McDaniel did not change the “physical stress[]” placed on the machine; by
    crawling under it, however, he interacted with the machine “in such a way that”
    he “increase[d] the risk of injury associated with the product.” Kampen, 
    157 F.3d at 311
    . As in Kampen, the crew “began using” the drill when they
    “elevated [the bit] with [the drill],” and McDaniel continued to use the drill “by
    relying on the [drill] to hold the [bit] in its elevated position”; when McDaniel
    “placed himself beneath the [drill], he was still using the [drill]: he was relying
    on the [drill] to hold the [bit] above his body.” 
    Id.
     Furthermore, the LPLA does
    not require that the “use” at issue only involve the plaintiff’s conduct. See La.
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    Rev. Stat. § 9:2800.54(A) (“The manufacturer of a product shall be liable to a
    claimant for damage proximately caused by a characteristic of the product that
    renders the product unreasonably dangerous when such damage arose from a
    reasonably anticipated use of the product by the claimant or another person or
    entity.”)
    Although we trace Kampen’s delineation of the scope of “use,” unlike in
    Kampen, we conclude here that there was legally sufficient evidence that
    McDaniel’s use of the drill was reasonably anticipated. A reasonable jury could
    have found that it was reasonable for Terex to anticipate that McDaniel would
    crawl under the drill bit. McDaniel “presented evidence” that Terex should have
    known that drill users were routinely venturing under drill bits, in
    contravention of warnings and instructions. See Kampen, 
    157 F.3d. at 314
    .
    According to McDaniel, for example, it was normal operating procedure to go
    under a suspended drill bit to remove a stake. “[T]hat was the standard
    operating procedure with every single employee at that shop, as well as other
    companies that do the same work.” McDaniel also testified that it was normal
    operating procedure to go under a suspended drill bit to change teeth. In fact,
    tooth changes occurred daily. Sanders agreed that drill users would routinely
    venture under the bit for tooth changes, and would partially venture under the
    bit for stake removals. Even Mims conceded that he did not follow the fifteen-
    foot rule, because drill personnel needed to be closer to the drill to do their work.
    A reasonable jury could infer from this evidence—i.e., the evidence that
    McDaniel’s act of crawling under the drill bit conformed to an industry-wide
    custom—that Terex “should have been aware” that drill users were using the
    drill contrary to the warnings and instructions. See Kampen, 
    157 F.3d at 314
    .
    This conclusion emerges from the standard of review for a Rule 50(a) judgment,
    pursuant to which we must view the evidence in the light most favorable to
    McDaniel. Hagan, 
    529 F.3d at 622
    .
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    Indeed, the case for finding reasonably anticipated use is stronger here
    than in Kampen or Broussard because of the nature of Terex’s warnings and
    instructions. Unlike the explicit warning relevant to the plaintiff in Kampen,
    the inexact warnings and instructions here did not specifically caution against
    McDaniel's conduct. For example, although a guidebook instruction warned
    personnel to stay fifteen feet away from the kelly bar, a placard warned that
    “failure to heed the warning could result in injury from flying objects or falling
    into the excavation”—a falling drill bit is not among the listed risks. No warning
    explicitly stated: “Do not go under a suspended drill bit.” And unlike the
    warnings in Kampen and Broussard, Terex’s warnings were not directed at a
    person in the plaintiff's position: a ground-man such as McDaniel. Instead, the
    warnings were directed at the drill operator, as they were placed on his control
    panel, right in front of him, for only him to see. Terex’s warnings are not precise
    enough to remove—as a matter of law—McDaniel’s conduct from the domain of
    “reasonably anticipated use.” That is, Terex’s warnings do not preclude a finding
    that Terex reasonably anticipated that McDaniel would crawl under the bit.
    In light of the standard of review, we hold that a reasonable jury could find
    that McDaniel’s use of the drill bit was reasonably anticipated. The jury may
    have ultimately disagreed, of course; perhaps the argument that Terex could
    have reasonably anticipated McDaniel’s risky crawl was weak. Nonetheless, the
    argument was not deficient enough to warrant judgment as a matter of law. The
    issue of reasonably anticipated use should have been left for our presumptively
    trustworthy, traditional fact-finder: the jury.
    B. Theories of Liability
    Although we have held that McDaniel put forth legally sufficient evidence
    to satisfy his threshold burden to show reasonably anticipated use, we must still
    evaluate whether he has put forth legally sufficient evidence (i) to satisfy his
    threshold burden to show causation, and (ii) to establish the substantive
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    No. 10-31264
    elements of his theories of liability—design defect and inadequate warning. We
    evaluate each theory of liability in turn, starting first with McDaniel’s design
    defect theory of liability.
    1. Design Defect Theory of Liability
    a. Causation
    To establish proximate cause under the LPLA, a plaintiff “must prove not
    only causation in fact, but also that the product defect was the most probable
    cause of the injury.” Wheat v. Pfizer, Inc., 
    31 F.3d 340
    , 342 (5th Cir. 1994)
    (internal quotation marks omitted). “The plaintiff’s burden is to prove causation
    by a preponderance of the evidence.” Llewellyn v. Lookout Saddle Co., 
    315 So. 2d 69
    , 71 (La. Ct. App. 1975). The plaintiff may satisfy its burden either by direct
    or by circumstantial evidence. Pipitone v. Biomatrix, Inc., 
    288 F.3d 239
     (5th Cir.
    2002) (citing Joseph v. Bohn Ford Inc., 
    483 So. 2d 934
    , 940 (La. 1986)). If the
    plaintiff resorts to circumstantial evidence, the evidence “must exclude other
    reasonable hypotheses with a fair amount of certainty.” Llewellyn, 
    315 So. 2d at 71
    ; accord Pipitone, 
    288 F.3d at 239
     (noting that “plaintiff may prove
    causation by establishing ‘with reasonable certainty that all other alternatives
    are impossible’” (emphasis omitted) (quoting Todd v. State, 
    699 So. 3d 35
    , 43 (La.
    1997)); Gomez, 
    442 F.3d at 936
     (noting that plaintiff must “eliminate alternative
    causes with ‘reasonable certainty’”). “This does not mean, however, that [the
    plaintiff] must negate all other possible causes.         Otherwise, the mere
    identification by the record of another possibility, although not shown to be
    causally active, would break the chain of causation.” Llewellyn, 
    315 So. 2d at 71
    ;
    accord Pipitone, 
    288 F.3d at 239
     (noting that “plaintiff need not absolutely
    negate all other possible causes of the injury to meet his burden on causation”
    (citing Joseph, 
    483 So. 2d at 940
    )).
    Here, there was sufficient evidence at trial from which the jury could
    reasonably find that inadvertent activation of the defectively designed float
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    No. 10-31264
    pedal was the most probable cause of the accident. McDaniel testified that just
    before the bit fell on him, from the corner of his eye, he saw Mims’s “feet
    rotating” as Mims “turned in the seat.” This testimony should be considered
    alongside evidence that the pedal was located near Mims’s feet, that the pedal
    was poorly guarded and uncovered, that the pedal was difficult to see, and that
    the pedal was naturally susceptible to inadvertent activation because it was
    positioned on the platform, where an operator such as Mims would rest his feet.
    In such context, McDaniel’s testimony is circumstantial evidence that Mims
    caused the accident by inadvertently activating the pedal when he rotated in his
    seat. Lending slight support to McDaniel’s causal explanation for the accident
    is Sanders’s testimony that, as operator, he would “catch [himself]” inadvertently
    striking the pedal with his foot “at least once” “on every job.” Meanwhile, Mims’s
    own testimony that he did not know how the bit fell is consistent with
    McDaniel’s causal explanation of inadvertent activation.            If Mims had
    mistakenly kicked the pedal, it makes sense that he would not have known that
    he had done so. At the very least, Mims’s testimony does not reduce the
    probability that Mims inadvertently hit the pedal.
    Because McDaniel failed to present direct evidence that inadvertently
    activating the pedal caused the accident, however, we must determine whether
    McDaniel adequately undermined alternative explanations for the accident.
    Given that only the float pedal and the hand-lever control the inner kelly bar,
    plausible alternative causes for the fall include the following: (i) Mims’s
    deliberate activation of the float pedal or the hand-lever, (ii) Mims’s inadvertent
    activation of the hand-lever, or (iii) an unidentified mechanical failure.
    Analyzing each alternative cause in turn, we conclude that there was sufficient
    trial evidence for a reasonable jury to find that McDaniel excluded each
    alternative cause with reasonable certainty.
    First, it is unlikely that Mims deliberately caused the bit to fall. According
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    No. 10-31264
    to the testimony at trial, Mims instructed McDaniel to remove the stake, and
    McDaniel told him to hold up. Unless Mims intended to harm McDaniel, for
    which there is no evidence, there is no reason to believe that he responded to
    McDaniel’s warning by purposefully pulling down the hand-lever or depressing
    the float pedal. Mims also stated that he did not remember what had happened,
    the veracity of which we cannot question; if he had committed a deliberate act,
    however, he would have remembered doing so.
    Likewise, it is unlikely that Mims accidentally pulled down on the hand-
    lever. The hand-lever is not susceptible to inadvertent activation; the lever is
    directly in front of and easily visible to the operator. Accordingly, when Batzer
    was asked whether it was possible that Mims inadvertently pushed the hand-
    lever too far, he responded: “That did not happen, to a reasonable degree of
    engineering probability,” and “the probability of that is essentially zero, so no.”
    The third alternative cause—a mechanical failure—is trickier to dispatch.
    Mims testified that the particular Texoma 800 in question was a fickle machine.
    On several occasions while Mims was operator, the bit had fallen unexpectedly,
    even though he had not “touch[ed] anything.” Mims’s testimony thus supports
    a narrative that contradicts McDaniel’s theory of liability—namely, that a
    mechanical failure, not inadvertent activation of the float pedal, caused the bit
    to fall. On the other hand, Mims testified that the day after the accident, Mims
    tested the machine, confirmed that it was working, took the machine to a job
    site, and completed the job. From the perspective of a reasonable juror, this fact
    could reduce, to some degree, the probability that a mechanical failure caused
    the accident on the previous day. What is more, Terex itself never put forward
    this alternative explanation, either at trial or in its brief on appeal. Under
    Louisiana law on causation, “the mere identification by the record of another
    possibility, although not shown to be causally active” by Terex, cannot defeat
    McDaniel’s causal story. See Llewellyn, 
    315 So. 2d at 71
    .
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    Viewing the evidence in the light most favorable to McDaniel, a reasonable
    jury could find that McDaniel had eliminated, with reasonable certainty,
    alternative explanations for the accident. We hold that there is legally sufficient
    evidence that the defective design of the float pedal—which rendered it
    vulnerable to inadvertent activation—was the most probable cause of McDaniel’s
    injury. While the evidence of causation is not certain to result in a jury finding
    that McDaniel met his threshold burden of causation, it is not so overwhelmingly
    deficient as to preclude the possibility that a reasonable jury could find that
    Mims inadvertently struck the pedal, causing the accident.
    b. Substantive Liability
    Under the LPLA, “a product is unreasonably dangerous in design if, at the
    time the product left its manufacturer's control”:
    (1) There existed an alternative design for the product that was
    capable of preventing the claimant's damage; and (2) The likelihood
    that the product’s design would cause the claimant’s damage and
    the gravity of that damage outweighed the burden on the
    manufacturer of adopting such alternative design and the adverse
    effect, if any, of such alternative design on the utility of the product.
    An adequate warning about a product shall be considered in
    evaluating the likelihood of damage when the manufacturer has
    used reasonable care to provide the adequate warning to users and
    handlers of the product.
    La. Rev. Stat. § 9:2800.56. We have held that “[i]n applying the risk-utility
    analysis, . . . a plaintiff must show evidence concerning the frequency of
    accidents like his own, the economic costs entailed by those accidents, or the
    extent of the reduction in frequency of those accidents that would have followed
    on the use of his proposed alternative design.” Krummel v. Bombardier Corp.,
    
    206 F.3d 548
    , 551–52 (5th Cir. 2000) (citing Lavespere v. Niagara Machine &
    Tool Works, Inc., 
    910 F.2d 167
    , 183 (5th Cir.1990)) (internal quotation marks
    omitted). In Krummel, we also observed that “[a] plaintiff may not need to detail
    and to quantify the risk and utility of a product where the product or the design
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    No. 10-31264
    feature in question is relatively uncomplicated and must be such that a layman
    could readily grasp them.” 
    Id.
     at 552 n.4 (internal quotation marks omitted).
    Here, Batzer explained that placing the pedal on the platform floor, near
    the operator’s feet, rendered accidental activation “normal,” or inevitable. The
    platform was a natural place for the operator to rest his feet; the pedal was
    positioned on the platform; the pedal was difficult to see; and despite the two
    metal bars near the base of the pedal, the pedal was poorly guarded and
    uncovered. If the operator lifted his feet and repositioned himself, there was
    nothing to prevent him from inadvertently striking the pedal as he rested his
    feet on the platform. Consequently, the pedal was naturally susceptible to
    inadvertent activation.
    Batzer further explained that an alternative design could have resolved
    this problem and prevented McDaniel’s injury: first, Terex could have placed an
    industry-standard, inverted, C-shaped shield over the pedal; second, Terex could
    have moved the pedal up from the ledge to the control panel. This alternative
    design would enhance safety without incurring prohibitive cost or sacrificing
    utility: “It is an unreasonably dangerous machine because it is not responding
    to deliberate but rather accidental inputs by the operator, which is completely
    preventible in a low-tech, low-cost way. . . . [Y]ou can load a cover over that
    switch and still operate the machine just fine.” Batzer opined that there was no
    reason for the pedal to be placed on the platform floor rather than on the control
    panel, and that moving up the pedal would not impair its functionality.
    In light of the standard of review, we hold that McDaniel’s design defect
    claim survives judgment as a matter of law. This case does not demand a
    complex, statistical risk-utility analysis.    The alternative design here is
    “uncomplicated” enough for a layman to “readily grasp”: either cover the pedal
    or move it. See Krummel, 
    206 F.3d at
    552 n.4. From the testimony admitted at
    trial, a jury could reasonably find that covering or moving the pedal would
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    No. 10-31264
    enhance safety without incurring prohibitive cost or sacrificing utility. Again,
    while the evidence is not certain to result in a favorable jury verdict, it is not so
    overwhelmingly deficient as to preclude the possibility that a reasonable jury
    might find that the drill, by virtue of the poorly-guarded and improperly placed
    pedal, was unreasonably dangerous in design. Accordingly, we REVERSE the
    district court’s Rule 50(a) judgment as a matter of law with respect to
    McDaniel’s design defect theory of liability.
    2. Inadequate Warning Theory of Liability
    To establish LPLA liability for inadequate warning, the plaintiff “has the
    burden of producing evidence and persuading the jury to find by a
    preponderance of the evidence that her injury arose from a reasonably
    anticipated use of the product and that her damage was proximately caused by
    the lack of an adequate warning.” Calvit v. Procter & Gamble Mfg. Co., 
    207 F. Supp. 2d 527
    , 530 (M.D. La. 2002) (citing Ellis v. Weasler Eng’g Inc., 
    258 F.3d 326
    , 331–32 (5th Cir. 2001)).
    Here, McDaniel failed to introduce any evidence establishing a causal link
    between Terex’s failure to adequately warn McDaniel about the hazard created
    by the defectively designed float pedal and his injury. No witness provided
    testimony supporting the notion that, but for an inadequate warning, McDaniel
    would not have crawled under the drill bit and would not have been injured.
    McDaniel presented no evidence of what additional warning Terex should have
    provided or how such a warning would have prevented the bit from crushing
    McDaniel. There was not sufficient trial evidence for a reasonable jury to find
    that inadequate warning caused McDaniel’s injury. Consequently, we AFFIRM
    the district court’s Rule 50(a) judgment as a matter of law with respect to
    McDaniel’s inadequate warning theory of liability.
    AFFIRMED in part, REVERSED in part.
    20