Acute Toxic Exposure May Be Proved Without Quantified Dose Evidence: Arkansas Affirms First Responders’ Recovery

1. Introduction

This decision addresses the proof necessary to connect an isolated chemical exposure with immediate and permanent injury. It also examines a hazardous-materials carrier’s disclosure obligations, the limits of the professional-rescuer’s doctrine, and appellate review of substantial noneconomic damages.

Six first responders—two law-enforcement officers and four towing-company workers—suffered injuries after responding to a burning tractor-trailer carrying formic acid. They sued Old Dominion Freight Line, Inc., and its driver, Foster, alleging negligence in failing to disclose the hazardous cargo. The parties stipulated that another motorist caused the collision. Thus, the relevant negligence was not causing the wreck, but failing to communicate information needed to protect those responding to it.

The Arkansas Supreme Court upheld $75 million in compensatory damages and rejected every asserted ground for reversal. Its central doctrinal clarification is that not every toxic-exposure case requires separately quantified proof of a harmful dose and the plaintiff’s actual dose. In an isolated-exposure case involving immediate symptoms, reliable medical testimony and closely connected circumstantial evidence may establish causation under ordinary negligence principles.

The decision is nevertheless limited. It does not eliminate expert-reliability requirements, make chronology alone sufficient to prove causation, or overrule the more demanding exposure analysis used in long-latency disease cases.

2. Background and Procedural History

The accident and delayed disclosure

On April 20, 2018, a pickup crossed the center line of Highway 70 in St. Francis County and collided with Foster’s Old Dominion tractor-trailer. The truck overturned and caught fire. One trailer contained a 565-pound barrel of formic acid, a corrosive substance whose safety data sheet identified acute inhalation toxicity.

Because the barrel weighed less than 1,001 pounds, federal law did not require a hazardous-materials placard. Federal regulations permitted voluntary placarding, but the absence of a mandatory placard did not eliminate other duties concerning shipping papers and emergency disclosure.

Deputy Jeff Goff and Trooper Keith Ponder testified that they separately asked Foster whether the truck carried hazardous materials and that he answered no. Foster and another witness disputed Ponder’s account. The responders consequently proceeded without knowing that formic acid was present.

The plaintiffs described a distinctive chemical odor, sudden burning of the eyes and airways, and severe difficulty breathing. Each sought emergency treatment that evening. Old Dominion did not provide the hazardous-materials information to law enforcement until 8:51 p.m., more than five hours after the collision and after the plaintiffs had been exposed.

Medical evidence

Dr. Scott Manaker, a pulmonologist and critical-care physician, examined the plaintiffs, reviewed medical records, performed testing, and considered their exposure histories and preexisting conditions. He attributed their injuries or aggravations of existing conditions to formic-acid exposure. The conditions varied among plaintiffs and included reactive airway dysfunction syndrome, worsening asthma or chronic obstructive pulmonary disease, rhinosinusitis, gastroesophageal reflux disease, and other complications.

He testified that the injuries were permanent, could not be cured, and would likely worsen with age. The plaintiffs and family members described limitations affecting employment, household activities, sleep, recreation, parenting, grandparenting, and marital intimacy.

The verdict and appellate proceedings

The trial separated the amount of any punitive damages from the initial liability proceedings. In the first phase, the jury found negligence and proximate causation, awarded compensatory damages, and rejected punitive liability. No second phase was therefore necessary.

The defendants’ motion for a new trial or remittitur was deemed denied. In Old Dominion Freight Line, Inc. v. McMillion, the court of appeals affirmed the other rulings but ordered a new trial because it considered the damages unsupported by substantial evidence.

The Supreme Court granted review and considered the appeal as though originally filed there, following Cooper v. Kalkwarf. Its decision vacated the intermediate appellate opinion and restored the circuit court’s judgment in full.

3. Summary of the Court’s Holdings

1. Causation: Reliable medical testimony, immediate symptoms, and the close temporal and spatial relationship between exposure and injury supplied substantial evidence without quantified dose reconstruction.
2. Federal preemption: The negligence claim enforced emergency-disclosure obligations substantively equivalent to federal requirements rather than imposing additional placarding obligations.
3. Professional rescuers: The plaintiffs were not paid, trained, or equipped to assume the particular risk of hazardous-material exposure. Nondisclosure of the concealed danger also defeated the asserted defense.
4. Jury instructions: The proposed instructions incorrectly required heightened dose proof and treated first-responder status alone as a complete defense.
5. Experts: The circuit court properly admitted specialized transportation-safety testimony and Dr. Manaker’s medical opinions.
6. Trial administration and evidence: The remaining challenges either showed no abuse of discretion or prejudice, or were not properly preserved.
7. Punitive-damages procedure: Arkansas Rule of Civil Procedure 42(b)(2) permitted the jury to consider punitive liability during the first phase while reserving any punitive amount for later.
8. Damages: The evidence supported the awards for permanent injury, pain, suffering, and mental anguish; the verdict did not warrant a new trial or remittitur.

4. Analysis and Precedents: Causation in Acute Toxic-Exposure Cases

A. The standard governing a directed verdict

The defendants’ directed-verdict motions challenged whether the plaintiffs had presented legally sufficient evidence. Under Calvary Christian Sch., Inc. v. Huffstuttler, such a motion tests evidentiary sufficiency. City of Little Rock v. Nelson ex rel. Nelson supplies the substantial-evidence standard and distinguishes factual review from de novo review of legal questions.

Union Pacific R.R. Co. v. Barber defines substantial evidence as evidence strong enough to move the conclusion beyond suspicion or conjecture. Applying these authorities, the court examined the evidence favorably to the verdict winners rather than reweighing credibility or selecting among competing factual accounts.

B. Earlier toxic-tort authorities were distinguished, not overruled

Richardson v. Union Pacific R.R. Co.

The plaintiff attributed multiple myeloma to years of exposure to diesel products, creosote, and pesticides. The court of appeals affirmed summary judgment after the plaintiff’s experts were found unqualified to establish the causal relationship. Drawing from Aurand v. Norfolk S. Ry. Co., the decision discussed general causation, specific causation, and differential etiology.

Old Dominion relied on that framework as universally applicable. The Supreme Court instead treated the chronic exposure and latent disease in Richardson as materially different from the immediate, localized exposure presented here.

Chavers v. General Motors Corp.

In an asbestos-mesothelioma action, the court adopted the “frequency, regularity, and proximity” test. The plaintiff had to connect exposure to the defendant’s particular asbestos-containing product with sufficient frequency, regularity, and proximity to make causation probable. That product-identification and cumulative-exposure problem did not govern this discrete accident.

Green v. Alpharma, Inc.

The court extended that exposure test to allegations that arsenic-containing chicken litter caused childhood leukemia. Here, Green illustrated the distinctive evidentiary difficulties associated with environmental exposure and latent disease. It also remained important to the separate inquiry into expert admissibility.

The majority therefore declined to classify every injury involving a toxic substance as requiring the same evidentiary architecture. The nature of the exposure, onset of symptoms, medical mechanism, and available proof matter.

C. The closest analogy: an isolated exposure

TMG Cattle Co., Inc. v. Parker Com. Spraying, LLC provided the principal factual analogy. Eighteen previously healthy cows died suddenly near a pond adjacent to a recently fertilized field. A veterinarian attributed the deaths to ammonia toxicosis despite the absence of laboratory confirmation. The court of appeals held that the clustered deaths, timing, location, fertilizer application, and veterinary opinion created a factual causation issue.

That decision rejected application of the frequency, regularity, and proximity test to a one-time exposure. The Supreme Court adopted its distinction between chronic exposure cases and acute events whose circumstances more closely resemble ordinary accidents.

D. Flexible proof does not mean proof by sequence alone

The majority relied on Restatement (Third) of Torts § 28, comments b and c, to explain that causal findings necessarily involve inference. Courts intervene when the inferential distance becomes too great, but they should not require separate proof under rigid analytical labels when admissible evidence already establishes factual causation.

A scholarly discussion of isolated exposure supplied an additional rationale: medical opinion may establish causation without epidemiological studies where only a few persons suffer injury during a discrete incident. Although the cited discussion uses a “testifying treating physician” model, Dr. Manaker was an examining expert, not the plaintiffs’ treating physician. The holding rested on his actual examinations, testing, record review, experience, and explanation—not on a treating relationship.

The court identified several mutually reinforcing circumstances:

• The overturned trailer contained a known corrosive inhalation hazard.
• Multiple persons experienced unusual and similar acute symptoms in the same area.
• The odor differed from ordinary burning-vehicle odors familiar to the responders.
• Symptoms arose during exposure and prompted immediate medical attention.
• The medical expert explained a mechanism consistent with chemical injury.
• He considered medical histories and potential alternative explanations.

Consequently, the absence of a numerical exposure estimate did not require judgment for the defendants on this record.

E. Ordinary proximate-cause principles still applied

Neal v. Sparks Reg'l Med. Ctr. supplied the definition of proximate cause: a natural and continuous sequence, unbroken by an efficient intervening cause, producing injury that otherwise would not have occurred. It also recognizes that proximate cause ordinarily presents a jury question.

Arthur v. Zearley establishes that circumstantial evidence may prove proximate cause when the facts are sufficiently connected to support a fair inference. Together, these cases permitted the jury to assess the relationship among the undisclosed cargo, the responders’ exposure, and the resulting injuries.

A critical distinction remains between medical causation—whether the chemical produced the injury—and conduct causation—whether the defendants’ disclosure failure caused the harmful exposure. The responders’ testimony that accurate information would have prompted withdrawal, perimeter control, and specialized cleanup supported the latter connection. The other motorist’s responsibility for the crash did not immunize subsequent negligent conduct.

5. Federal Preemption: Parallel Disclosure Duties Survive

A. The governing approach

United Food & Com. Workers Int'l Union v. Wal-Mart Stores, Inc. locates federal preemption in the Supremacy Clause and supports de novo review. GSS, LLC v. CenterPoint Energy Gas Transmission Co. identifies express, field, and conflict preemption and places the burden of proving preemption on the party asserting it.

Under Anderson v. BNSF Ry. Co., quoting CSX Transp., Inc. v. Easterwood, an express preemption provision is interpreted primarily through its wording. The relevant Hazardous Materials Transportation Act provision, 49 U.S.C. § 5125(b)(1), preempts certain state requirements that are not “substantively the same” as federal requirements governing specified hazardous-materials subjects.

B. Permissive placarding was not converted into mandatory placarding

The defendants argued that discussion of voluntary placarding effectively imposed a state-law duty to placard a load federal law exempted. The court rejected that characterization. The evidence and instructions expressly acknowledged that placarding was optional for this shipment, and the plaintiffs’ expert agreed that federal law did not require a placard.

The decision therefore does not authorize state tort law to override federal placarding thresholds. It holds that this case did not impose such an additional requirement.

C. The disclosure claim tracked federal requirements

Under 49 U.S.C. § 5110(c), the transporter must disclose hazardous-material information immediately upon an appropriate emergency authority’s request. The jury also received 49 C.F.R. § 177.817, addressing the accessibility and recognizability of shipping papers following an accident.

Two officers testified that they requested information and received an incorrect denial. The company did not supply the relevant documents until after the injuries occurred. Accordingly, the negligence theory enforced obligations substantively equivalent to federal law.

Tipton v. CSX Transp., Inc. supported this conclusion. That federal decision held that a duty to identify a toxic chemical and communicate its identity to emergency responders after a derailment was substantively similar to the HMTA’s requirements and was not preempted.

Scope matters: the court resolved a case involving actual requests and delayed disclosure. It did not establish a universally applicable, freestanding duty to volunteer information regardless of the statutory circumstances.

6. The Professional-Rescuer’s Doctrine: The Specific Risk Controls

A. Existing Arkansas law

In Waggoner v. Troutman Oil Co., Inc., Arkansas adopted the fireman’s rule on public-policy grounds. A person negligently creating a fire generally owes no duty to protect a firefighter from the very danger the firefighter is employed to confront.

Nowicki v. Pigue extended the doctrine to a roadside-assistance worker but required examination of whether the worker was paid to assume the particular risk. That risk-specific inquiry, rather than the general label “first responder,” determined the result here.

B. Why these claims were not barred

The towing workers testified that they would not have accepted hazardous-material cleanup and that specialized companies possessed the necessary training and protective equipment. The officers described their role as recognizing the hazard, withdrawing, establishing a perimeter, and summoning appropriate personnel—not entering an unidentified toxic atmosphere.

The court therefore found that these plaintiffs were not trained, equipped, or paid to assume this exposure risk.

C. Concealed dangers supplied an additional ground

The majority also reasoned that nondisclosure defeated the defense even if some occupational assumption of exposure risk otherwise existed. Clark v. Corby recognizes that the doctrine’s policy justification does not extend to an added, hidden peril known to the private party but unknown to the rescuer when a warning could have been given. Bartels v. Cont'l Oil Co. provided additional support for the concealed-danger limitation.

This reasoning preserves the doctrine while preventing it from becoming blanket immunity for failing to identify a distinct hazard.

D. Consequences for jury instructions

Boellner v. Clinical Study Ctrs., LLC requires a proposed instruction to state the law correctly and have evidentiary support. The defendants’ proposed rescuer instruction would have required a defense verdict merely upon finding that a plaintiff was paid to respond to accidents. It omitted the particular-risk inquiry and the relevance of nondisclosure.

The proposed causation instruction likewise improperly demanded proof of a minimum harmful dose and an actual dose meeting that threshold. Because that was not the governing standard here, refusing both sets of instructions was proper.

7. Expert Testimony: Specialized Assistance Without Surrendering the Court’s Role

A. Transportation and hazardous-materials expertise

Arkansas Rule of Evidence 702 permits qualified experts to offer specialized knowledge that assists the jury. The court upheld testimony from Robert Richard concerning hazardous-materials transportation obligations and from David Dorrity concerning trucking-safety training and accident-response procedures.

NationsBank, N.A. v. Murray Guard, Inc. allowed expert testimony concerning compliance with industry fire-prevention standards. Rhine v. Haley permitted testimony concerning professional standards of attorney conduct. These authorities supported expert explanation of industry standards and whether the defendants’ practices complied with them.

The circuit court imposed boundaries: the experts could not declare a party negligent, assess witness credibility directly, or testify beyond their expertise. The jury received the governing legal instructions from the court, including the explanation that a statutory violation was evidence of negligence rather than negligence automatically.

The decision should not be read as a general license for experts to instruct jurors on law. Its approval depended on the specialized regulatory context and the restrictions separating industry-compliance opinions from the ultimate legal determination.

Dorrity’s testimony was also not merely common knowledge. Carrier training programs, hazardous-material response plans, and industry safety procedures were subjects on which specialized experience could assist ordinary jurors.

B. Medical reliability remained necessary

Under Green v. Alpharma, Inc., the circuit court must assess the validity of the expert’s reasoning and its application to the facts. Drawing on Kumho Tire Co., Ltd. v. Carmichael, the majority emphasized reliability, relevance, and the intellectual rigor expected in the expert’s field.

Dr. Manaker lacked prior experience treating formic-acid exposure specifically and identified no studies directly linking that chemical to each claimed condition. Nevertheless, the majority considered his opinion sufficiently grounded in:

• Decades of treating inhalation injuries, including injuries involving other corrosive acids;
• Review of formic acid’s hazardous properties;
• Individual examinations and lung-function testing;
• Medical-record and exposure-history review;
• Consideration of age, smoking, asthma, and other preexisting conditions; and
• An explanation of how inhaled acid fumes could injure airways and swallowed particles could affect the esophagus.

The majority also rejected the assertion that he ignored differential etiology. It found that he considered alternative explanations rather than simply assuming the exposure caused every later complaint.

Schmoll v. Hartford Cas. Ins. Co. explains the fallacy of post hoc, ergo propter hoc: assuming that an event caused a later condition merely because it preceded it. The court distinguished that error because the opinion rested on more than timing.

C. The central methodological disagreement

The majority treated acute symptoms, clinical assessment, and a plausible corrosive-injury mechanism as an adequate combined foundation. The dissent regarded the same foundation as an unsupported extrapolation from other chemicals and general hazard information.

Thus, the division concerned not whether experts must be reliable, but what makes a medical opinion sufficiently reliable in a discrete chemical-exposure case when quantitative measurements and chemical-specific studies are unavailable.

8. Remaining Trial Issues and Their Precedential Significance

A. Impeachment of Trooper Ponder

The defendants sought to use an internal-investigation file and cross-examination about alleged misconduct to attack Ponder’s credibility. The allegations had not produced official findings or criminal charges. They included alleged dishonesty and unrelated professional misconduct.

Nichols v. Swindoll confirms broad trial-court discretion over evidence; Tucker v. State requires a showing of prejudice before reversal. Applying Rules 403 and 404(b), the court found the alleged misconduct insufficiently connected to Ponder’s accident testimony or an independently relevant common plan. Exploring it would also have generated collateral disputes.

Rule 608(b) independently barred the investigative file as extrinsic evidence of specific conduct. For cross-examination, Maiden v. State requires good faith, probative value outweighing prejudice, and conduct related to truthfulness. The majority found those requirements unsatisfied on this proffer, emphasizing Ponder’s denials or lack of recollection and the limited probative value.

Hill v. State was distinguished because the officer’s prior false statements there unquestionably concerned veracity and the officer was the only witness supporting the relevant accusation. Here, Goff independently testified that Foster denied carrying hazardous materials.

This portion is particularly record-sensitive. The court’s reliance on denials and nonrecollection should not be generalized into a rule that a witness can always defeat otherwise proper credibility questioning by failing to remember prior conduct. The decision also rested on collateral-issue concerns and the absence of demonstrated prejudice.

B. A witness’s previous service as bailiff

Goff had previously served as bailiff for proceedings involving members of the same jury pool, but he did not serve as bailiff in this trial. Under Berry v. St. Paul Fire & Marine Ins. Co., potential jurors are presumed qualified and unbiased, and the challenger must establish actual bias.

Voir dire revealed no significant prior interactions or resulting inclination to credit Goff more highly. No relevant juror was challenged for cause. The court distinguished Turner v. State of Louisiana and Gonzales v. Beto, which involved witnesses serving as bailiffs during the same criminal trial. Prior service did not, without more, require an entirely new jury pool.

C. Medical bills: preservation, not a substantive admissibility ruling

The plaintiffs did not seek medical-expense damages. Although the circuit court initially excluded their bills, it later allowed possible admission when a plaintiff testified about treatment. Bills were admitted for Hunter Bokker, Pettus, and Billingsley.

The defendants did not proffer the bills of McMillion, Jones, or Bengi Bokker. Under Sharp v. State, excluded evidence generally must be proffered unless its substance is apparent from context. Because the omitted bills were not otherwise apparent, the court did not reach their admissibility.

Accordingly, this decision does not establish that medical bills are irrelevant whenever medical expenses are not requested.

D. Thereasa May’s testimony

May described unsuccessful efforts to obtain shipping documents from Old Dominion and her perception of being dismissed. The court held that she did not recount an out-of-court statement offered for its truth, so the challenged testimony was not hearsay.

It also applied Dollar Gen. Corp. v. Elder: cumulative evidence ordinarily does not establish prejudice. Other testimony already showed attempts to obtain cargo information and delayed disclosure.

E. The shadow jury

A paid group of trial observers attracted attention when lunch menus were circulated in the gallery. The circuit court reprimanded plaintiffs’ counsel for not disclosing their presence but found no reported contact with actual jurors.

Smith v. State, 2024 Ark. 1, treats mistrial as an extraordinary remedy for prejudice undermining fundamental fairness. Williams v. State recognizes that an admonition ordinarily cures potential prejudice. The defendants received the instruction they requested—that the interruption concerned external matters unrelated to the evidence—and showed no remaining prejudice.

The holding rejects speculation about influence on this record; it is not unrestricted approval of undisclosed shadow-jury practices.

F. Bifurcation of punitive damages

Arkansas Rule of Civil Procedure 42(b)(2) expressly permits the first phase to address compensatory liability and damages together with punitive liability, while reserving the punitive amount for a later proceeding. Evidence of financial condition is generally excluded from the initial proceeding unless relevant to another issue.

Ciba-Geigy Corp. v. Alter identifies convenience, avoidance of prejudice and delay, and efficient judicial administration as relevant considerations. The evidence of compensatory and punitive liability substantially overlapped, supporting the chosen procedure.

The defendants acknowledged that the 2015 rule amendment superseded the statutory provision they invoked for mandatory complete separation. Because the jury rejected punitive liability, the court also found their asserted prejudice unpersuasive.

G. Reptile Theory and Golden Rule arguments

The circuit court prohibited Golden Rule arguments—requests that jurors place themselves in a party’s position—but declined to prohibit an entire advocacy strategy merely because it was labeled “Reptile Theory.” Puckett v. State and Smith v. Pettit establish the impropriety of Golden Rule appeals.

The court sustained objections when such arguments were identified. Other objections to particular testimony or rhetoric were not preserved. Harlan v. State and Schichtl v. Slack distinguish preservation through a sufficiently specific motion in limine from the need to object when a broad objection does not identify the later challenged conduct.

KW-DW Props., LLC v. Ark. State Highway Comm'n supplied the presumption that jurors followed the court’s instructions. The resulting rule is practical: courts regulate particular arguments under existing procedural and evidentiary standards, rather than deciding admissibility through a general litigation-strategy label.

9. Damages: Deference to the Jury and the Limits of Remittitur

A. The applicable standards

Rule 59(a)(4) permits a new trial for excessive damages appearing to result from passion or prejudice; Rule 59(a)(5) addresses errors in assessing recovery. Under KW-DW Props., LLC v. Ark. State Highway Comm'n, denial of a new-trial motion is reviewed for manifest abuse of discretion.

Carr v. Nance asks whether the award shocks the court’s conscience or demonstrates passion or prejudice, considering the evidence favorably to the prevailing plaintiff. It also recognizes remittitur when compensatory damages cannot be sustained by the evidence. Travis Lumber Co. v. Deichman ties that review to substantial evidentiary support.

Advocat, Inc. v. Sauer explains that pain and suffering have no market price or exact measuring rule. Builder's Transp., Inc. v. Wilson, quoting Matthews v. Rodgers, cautions that comparisons with other awards have scant value because each plaintiff’s circumstances differ.

B. What the jury was compensating

The jury was instructed to consider the nature, extent, duration, and permanency of injury, together with past and reasonably certain future pain, suffering, and mental anguish. It could account for aggravation of preexisting conditions, but not suffering that would have occurred without the incident.

The awards therefore did not reimburse medical bills or lost wages. Nor were they separate consortium awards to spouses. Family and marital testimony illustrated the plaintiffs’ own suffering and the impact of permanent injury.

The majority emphasized the cumulative significance of lifelong respiratory limitations: difficulty performing physical work, interrupted sleep, reduced independence in ordinary tasks, inability to carry a child comfortably, restricted recreation, and distress associated with struggling to breathe.

C. Why the majority upheld the amounts

The majority found substantial evidence of permanent injury and meaningful impairment of ordinary life. Continued employment or participation in some activities did not negate the evidence that those activities had become more difficult or restricted.

It also viewed the differentiated awards as evidence of individualized evaluation. The jury’s rejection of punitive liability supported the conclusion that it had not simply used compensatory damages to punish the defendants, although rejection of punitive damages would not by itself establish that every compensatory amount was reasonable.

The court distinguished Vaccaro Lumber v. Fesperman because that record lacked evidence of permanent injury. It distinguished Advocat, Inc. v. Sauer, despite the severe suffering there, because the decedent had a much shorter remaining life expectancy than the plaintiffs here.

The majority further rejected medical expenses as a controlling yardstick. Treatment costs can reflect treatment availability or the course of care rather than the extent of permanent suffering.

D. What the damages ruling does not establish

The court did not abolish remittitur, create a minimum award for respiratory injury, or hold that any permanent injury supports any amount. Its stated standard remains substantial evidence and the conscience-shocking or passion-and-prejudice inquiry. The practical significance is the considerable deference afforded to a properly instructed jury on this particular record.

10. The Dissent: Scientific Reliability and Meaningful Review of Damages

Justice Cody Hiland dissented, joined by Justices Rhonda Wood and Bronni. The dissent challenged both foundational causation and the amount of the awards. It would have required judgment for the defendants for insufficient causation proof; alternatively, it would have substantially reduced the verdict.

A. The damages disagreement

The dissent viewed the injuries as insufficiently severe to justify awards between $5 million and $25 million per plaintiff. It emphasized continued employment, substantial retained activities, limited treatment, preexisting conditions, and the absence of the economic and physical consequences present in other serious-injury cases.

Its strongest doctrinal point was that proving some permanent injury does not automatically establish that a particular multimillion-dollar valuation is reasonable. In its view, appellate deference had displaced the independent judicial responsibility to review the amount.

An important qualification concerns medical expenses: the approximately $15,156 discussed in the dissent represented the admitted bills of only Billingsley, Pettus, and Hunter Bokker. It was not an established total of all six plaintiffs’ medical expenses. The other three plaintiffs’ bills were not in the appellate record through a proper proffer.

B. Precedents used to support damages scrutiny

The dissent also assembled a historical line of remittitur decisions to show that reduction is an established judicial function:

• Johnson v. Gilliland: supported reducing $20,250 to $10,000 and supplied a substantial-evidence formulation for review.
• Fisher Trucking, Inc. v. Fleet Lease, Inc.: reduced $1 million to $317,078.28.
• Scheptmann v. Thorn: approved reducing a consortium award from $50,000 to $25,000.
• Anheuser-Busch, Inc. v. McAlpin: reduced $10,000 to $3,000 for injury associated with a foreign substance in beer.
• Browder v. Gahr: reduced a personal-injury judgment from $30,000 to $20,000.
• Scott v. Jansson: reduced a consortium award from $25,000 to $10,000.
• Ark. State Hwy. Comm'n v. Bradford: reduced $26,500 to $24,878.
• Duty v. Gunter: reduced $7,500 to $3,500.
• Mo. Pac. Transp. Co. v. Miller: reduced a consortium award from $25,000 to $15,000.
• Union Motor Co. v. Turbiville: reduced $800 to $647.18.
• Daniels v. Allen: reduced $20,000 to $10,000.

These cases established the availability and historical exercise of remittitur, not a transferable ceiling. The majority rejected the dissent’s use of comparisons as a substitute for evaluating this record.

C. Authorities concerning medical expenses

The dissent cited several non-Arkansas authorities to argue that medical costs can provide relevant evidence of injury severity:

• Gladstone v. W. Bend Mut. Ins. Co. connected greater injury severity generally with greater treatment costs and suffering.
• Hannah v. Haskins recognized uses of medical-payment evidence in assessing injury extent or a possible incentive to feign injury.
• Luther v. Lander treated medical expenses as admissible when relevant to severity.
• Warren v. Ballard recognized their possible relevance to pain-and-suffering damages.
• Meek v. Montana Eighth Jud. Dist. Ct. recognized relevance to the nature and severity of injuries and required treatment.

These authorities supported relevance, not a mandatory damages-to-bills ratio. They also did not overcome the preservation defect concerning the excluded bills in this appeal.

D. The causation disagreement

The dissent would have required separate proof of general and specific causation. It emphasized Dr. Manaker’s lack of formic-acid treatment experience, absence of chemical-specific studies, inability to quantify exposure, and reliance on safety information and analogy to other acids.

Its cited authorities developed several related objections:

The majority did not adopt those authorities as imposing a universal quantitative threshold. It instead applied Arkansas’s ordinary causation and expert-reliability standards to the acute-exposure circumstances.

E. The prohibition against speculation

The dissent invoked First Elec. Coop. Corp. v. Pinson, Mo. Pac. Transp. Co. v. Bell, Superior Forwarding Co. v. Garner, Schubert v. Target Stores, Inc., and Serrano v. Westrim, Inc. for the principle that verdicts cannot rest on conjecture. Mo. Pac. R.R. Co. v. Davis requires substantial essential facts or facts justifying reasonable inference, while KBX, Inc. v. Zero Grade Farms reinforced the substantial-evidence requirement.

The majority accepted the anti-speculation principle but disagreed about its application: it regarded the combined clinical and circumstantial evidence as a permissible inference rather than conjecture.

F. Constitutional arguments were the dissent’s position, not the holding

Union Pacific R.R. Co. v. Sharp supported the distinction between actual and proximate causation. The dissent then linked insufficient causation proof and arbitrary damages to due process, invoking State Farm Mut. Auto. Ins. Co. v. Campbell.

That constitutional extension requires care. State Farm concerns constitutional constraints on punitive damages; the verdict here consisted of compensatory damages, and punitive liability was rejected. The dissent acknowledged the absence of a controlling decision adopting its precise “due process requires causation” formulation. The majority did not announce a new constitutional test or a punitive-style numerical limit for compensatory awards.

Finally, the dissent quoted Justice Hickman’s concurrence in Blaylock v. Strecker as a broader warning against allowing personal sentiment to displace neutral adjudication. That quotation supplied a rhetorical account of judicial responsibility, not an additional governing test.

11. Potential Impact

A. A more contextual approach to toxic-exposure proof

Future Arkansas litigants must analyze the exposure scenario rather than assume that every toxic-substance claim requires the same quantitative showing. Acute incidents with immediate symptoms and reliable clinical evidence may reach a jury without reconstructed dose measurements. Chronic environmental exposure and latent disease remain materially different.

Plaintiffs still need an evidentiary foundation connecting the substance, exposure, injury mechanism, and individual condition. Defendants may challenge unsupported extrapolation, inconsistent medical findings, alternative causes, or an unexplained gap between exposure and claimed harm.

B. Emergency disclosure remains independently important

Compliance with placarding thresholds does not resolve compliance with shipping-paper and requested-disclosure obligations. Carriers should distinguish these duties in training, document access, and emergency-response procedures.

C. Occupational status is not blanket immunity

The professional-rescuer’s doctrine requires identification of the actual risk the worker was employed to assume. Concealed chemical hazards may differ from ordinary collision, fire, or roadside risks, particularly when accurate information would have led the worker to withdraw.

D. Noneconomic awards will remain highly record-dependent

The decision strengthens the practical importance of detailed testimony about permanent functional impairment. Modest treatment expenses and continued work do not necessarily defeat substantial recovery. Conversely, the divided court demonstrates that the permissible relationship between injury evidence and award size remains contested.

E. Preservation can determine the appeal

Several challenges failed without a merits determination because the defendants did not make an adequate proffer, preserve a demonstrative exhibit, or object specifically when challenged conduct occurred. The opinion is therefore as important for appellate practice as for substantive tort law.

12. Complex Concepts Simplified

General causation

Whether a substance is capable of causing the kind of injury claimed.

Specific causation

Whether that substance caused or worsened this particular person’s injury.

Dose reconstruction

An estimate of how much chemical a person encountered. The court did not require a numerical reconstruction on these facts.

Differential etiology

A medical process of considering possible causes and evaluating which explanation best accounts for the patient’s condition.

Proximate cause

A legally sufficient causal connection between wrongful conduct and injury. Here, the relevant conduct was nondisclosure, not causing the collision.

Federal preemption

Federal law displacing an inconsistent state requirement. A state claim that enforces an equivalent federal obligation may survive.

Professional-rescuer’s doctrine

A limitation on recovery for dangers a professional is employed to confront—not automatic immunity whenever the injured person is a responder.

Remittitur

A judicial reduction of an excessive damages award, ordinarily as an alternative to a new trial.

Abuse of discretion

A deferential review standard under which disagreement alone does not justify reversal of the trial court’s decision.

Proffer

Placing excluded evidence, or its substance, in the record so an appellate court can evaluate the exclusion.

Golden Rule argument

An improper invitation for jurors to decide the case by imagining themselves in a party’s position.

Shadow jury

Paid observers who report reactions to a party’s lawyers. They are not members of the actual jury and must not influence it.

13. Conclusion

The principal rule is contextual: an isolated toxic exposure producing immediate injury may be proved through reliable medical and circumstantial evidence without quantified dose evidence. The court also preserved parallel federal disclosure claims, confined the professional-rescuer’s doctrine to the risks actually assumed, and upheld substantial compensation for permanent respiratory impairment.

The sharp dissent exposes the decision’s central tension: how courts can respect a jury’s assessment of lifelong suffering while maintaining meaningful scrutiny of scientific proof and damages. The majority resolved that tension in favor of the jury on this record—not by eliminating causation, reliability, or remittitur, but by finding their existing requirements satisfied.