UNPUBLISHED

UNITED STATES COURT OF APPEALS

FOR THE FOURTH CIRCUIT

No. 20-2129

CHRIS HILL,

 Plaintiff - Appellant,

v.

CERTEX USA, INC.,

 Defendant - Appellee.

Appeal from the United States District Court for the Middle District of North Carolina, at 

Greensboro. Catherine C. Eagles, District Judge. (1:19-cv-00422-CCE-JEP)

Argued: January 24, 2023 Decided: February 15, 2023 

Before GREGORY, Chief Judge, and WYNN and THACKER, Circuit Judges.

Affirmed by unpublished opinion. Judge Wynn wrote the opinion, in which Chief Judge 

Gregory and Judge Thacker concurred.

ARGUED: Andrew Joseph Schwaba, SCHWABA LAW FIRM, Charlotte, North 

Carolina, for Appellant. Luke Paul Sbarra, HEDRICK GARDNER KINCHELOE & 

GAROFALO, LLP, Charlotte, North Carolina, for Appellee. ON BRIEF: M. Duane 

Jones, Kari M. Loomer, HEDRICK GARDNER KINCHELOE & GAROFALO, LLP, 

Charlotte, North Carolina, for Appellee.

Unpublished opinions are not binding precedent in this circuit.

USCA4 Appeal: 20-2129 Doc: 41 Filed: 02/15/2023 Pg: 1 of 13
2

WYNN, Circuit Judge:

Plaintiff Chris Hill was seriously injured at work when two steel plates fell on him 

after the sling he was using to move the plates failed. He sued the manufacturer of the sling, 

Certex USA, Inc. (“Certex”). The district court granted summary judgment to Certex. We 

affirm.

I.

The facts, taken in the light most favorable to Hill, are as follows. 

Hill, a resident of North Carolina, began working for Tencarva Machinery 

Company, LLC (“Tencarva”), in 2008. Tencarva assembles industrial pumps, and Hill

worked as a fabricator, making custom pump stations. 

Tencarva began purchasing synthetic nylon web slings for use in moving materials 

around its workshop from Certex, an Arizona corporation, around 2010. In late September 

2016, Hill attempted to use one such sling to move two carbon steel plates. The sling was 

essentially a one-inch-wide, three-foot-long strap made from two-ply bonded nylon thread 

with a flat loop—an eye—at each end. Each carbon steel plate was nearly seven feet tall, 

five feet wide, and half an inch thick, and weighed approximately 700 pounds. The plates 

also each had a thirty-inch-diameter hole “off-set from the center in one end.” J.A. 704.1

Hill inspected the sling and saw no problems with it—it looked brand new and had 

been used at most for a few weeks. According to Hill, the same sling had been used to 

offload the plates from shipping the day before. He felt around the edges of the holes in the 

1 Citations to the “J.A.” refer to the Joint Appendix filed by the parties in this appeal.

USCA4 Appeal: 20-2129 Doc: 41 Filed: 02/15/2023 Pg: 2 of 13
3

plates—where the plates would contact the sling—for sharp edges, burrs, or other rough 

abrasions, and finding none, used a choker hitch to secure the plates in the sling. This meant 

that Hill threaded the sling through the plates’ holes, ran one eye of the sling through the 

other, and then cinched the sling to form a tight loop across the space between the hole and 

edge of the plates. He then attached the other eye onto a gantry crane hook.

Hill used the sling and crane to transfer the plates into an aisle of the workshop, 

where he would be able to access them with a forklift. He moved the plates to just barely 

rest on the floor in a vertical position. At that point, Hill was standing about eight to ten 

feet from the plates, which he believed was a safe distance. He turned around to retrieve 

the forklift. But as he did so, the sling broke and the plates swung around, hit him in the 

back, and fell on top of him, pinning him to the ground face-down. He was knocked 

unconscious and suffered serious injuries to his back, hip, ankle, head, and teeth. Those 

injuries required multiple surgeries, and he has not fully recovered from them.

Certex manufactured the sling in question in June 2015. When Tencarva purchased 

the sling from Certex, the sling included a General Conditions sheet; a laminated tag stating 

the weight-load limits (2,480 pounds for a choker hitch); a warning label attached to the 

weight-load tag; and two Safety Bulletins—one in English and one in Spanish—folded 

inside a plastic bag attached to the sling. Although Certex normally produced its own 

warning labels, in June 2015 it was experiencing production issues related to those tags, so 

the warning label attached to slings manufactured at that time was one produced by the 

Web Sling and Tie Down Association (“WSTDA”).

USCA4 Appeal: 20-2129 Doc: 41 Filed: 02/15/2023 Pg: 3 of 13
4

The Certex warning label that had previously been in use and the WSTDA warning 

label used on the sling in question had a key difference that is the subject of much of the 

dispute in this case. Certex’s warning label instructed users to “ALWAYS protect [the] 

sling from cuts. Avoid sharp edges and corners, pointed objects, [and] rough surfaces.” 

J.A. 597 (italics added). By contrast, the WSTDA warning label instructed users to 

“ALWAYS protect slings in contact with edges, corners, protrusions or abrasive surfaces 

with materials of sufficient strength, thickness and construction to prevent damage.” J.A. 

558 (italics added). Elsewhere, it stated in bold font that “[w]eb slings must ALWAYS be 

protected from being cut or damaged by corners, edges, protrusions or abrasive surfaces 

with protection sufficient for the intended purpose.” Id. (italics added). In neither case did 

the WSTDA warning label qualify “edges” with the word “sharp.”2

The Safety Bulletin, also produced by the WSTDA, provided the same warning 

about edges as the WSTDA warning tag, with no qualification that the edges must be 

“sharp.” The Safety Bulletin further clarified that “[s]ynthetic web slings can be damaged, 

abraded or cut as tension and compression between the sling, the connection points and the 

load develops. Surfaces in contact with the sling do not have to be very abrasive or have 

2 The Certex warning label also referred users to the “attached Operators 

Instructions for other important information.” J.A. 597. As there were no “Operators 

Instructions” attached to its slings, it is unclear whether the label meant to refer to the 

Safety Bulletin (which was attached to the sling, but not specifically labeled “instructions”) 

or the Warning and Application Instructions (which were not attached to slings—they were

part of the product catalog—but used the word “Instructions”). The Warning and 

Application Instructions, like Certex’s warning label, advised users to “[a]void sharp edges 

[and] corners, pointed objects, and rough surfaces.” J.A. 376 (emphasis added). The

WSTDA warning label, by contrast, did not refer users to any “Operators Instructions.”

Instead, it explicitly referred to the Safety Bulletin provided with Certex slings. J.A. 557.

USCA4 Appeal: 20-2129 Doc: 41 Filed: 02/15/2023 Pg: 4 of 13
5

‘razor’ sharp edges in order to create the conditions for sling failure.” J.A. 599–600

(emphasis added). The Safety Bulletin recommended different ways to protect the sling, 

such as using commercially available padding.

Hill testified in his deposition that he had read and understood the warning tag and 

Safety Bulletin attached to the sling in question at some point before the accident. He also 

explained that he received annual safety training from Tencarva on how to use lifting 

equipment, including a review of warnings and industry standards.

Hill sued Certex in North Carolina state court in 2019, bringing three claims: breach 

of an express warranty, breach of the implied warranty of merchantability, and negligence.

Certex removed the case to federal court based on diversity jurisdiction. It then moved for 

summary judgment, and Hill cross-moved for partial summary judgment. The district court 

granted Certex’s motion and dismissed the case with prejudice. See Hill v. Certex USA, 

Inc., No. 1:19-CV-422, 2020 WL 6193666, at *1–2 (M.D.N.C. Sept. 28, 2020). Hill timely 

appealed, challenging only the district court’s decisions on the implied-warranty-ofmerchantability and negligence claims.

II.

Our review of the district court’s summary-judgment decision is de novo, and we 

must “view the facts in the light most favorable to the nonmoving party”—here, Hill.

Whitmire v. S. Farm Bureau Life Ins. Co., 52 F.4th 153, 157 (4th Cir. 2022) (quoting 

Kitchen v. Upshaw, 286 F.3d 179, 182 (4th Cir. 2002)). “Summary judgment is appropriate 

whenever ‘there is no genuine dispute as to any material fact and the movant is entitled to 

judgment as a matter of law.’” Id. (quoting Fed. R. Civ. P. 56(a)).

USCA4 Appeal: 20-2129 Doc: 41 Filed: 02/15/2023 Pg: 5 of 13
6

The parties agree that in this diversity-jurisdiction case, North Carolina law applies 

and controls our analysis. See Minnieland Priv. Day Sch., Inc. v. Applied Underwriters 

Captive Risk Assurance Co., 913 F.3d 409, 415 n.4 (4th Cir. 2019) (noting that where the 

parties agree that a certain State’s law applies, “we need not inquire further into the choiceof-law question[]”).

A.

First, upon considering Hill’s claim for breach of the implied warranty of 

merchantability, we affirm the district court’s decision to grant summary judgment to 

Certex on this claim.

To establish a breach of the implied warranty of merchantability, a plaintiff must 

prove, among other things, “that the goods bought and sold were subject to” such an 

implied warranty. DeWitt v. Eveready Battery Co., 565 S.E.2d 140, 147 (N.C. 2002) 

(quoting Morrison v. Sears, Roebuck & Co., 354 S.E.2d 495, 497 (N.C. 1987)). In North 

Carolina, a warranty of merchantability is implied in a contract for the sale of goods unless 

disclaimed. N.C. Gen. Stat. § 25-2-314(1). And the employee of a good’s buyer may bring 

an implied-warranty-of-merchantability claim against the good’s manufacturer regardless 

of any lack of privity of contract. Id. § 99B-2(b).

For a seller to disclaim the implied warranty of merchantability, “the [disclaimer] 

language must mention merchantability and in case of a writing must be conspicuous.” Id.

§ 25-2-316(2). By statute, “‘[c]onspicuous’ . . . means so written, displayed, or presented 

that a reasonable person against which it is to operate ought to have noticed it,” such as 

USCA4 Appeal: 20-2129 Doc: 41 Filed: 02/15/2023 Pg: 6 of 13
7

“[a] heading in capitals equal to or greater in size than the surrounding text.” Id. § 25-1-

201(10).

As noted, Certex included a “General Conditions” sheet with the sling it sold to 

Tencarva. That sheet set forth conditions of the sale, including the following:

Except for the warranty that the goods are made in a workmanlike manner and in 

accordance with the specifications thereof supplied or agreed to by [the] buyer[,] 

SELLER MAKES NO WARRANTY EXPRESS OR IMPLIED; AND ANY 

IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A 

PARTICULAR PURPOSE WHICH EXCEEDS THE FORGOING [sic] 

WARRANTY IS HERBY [sic] DISCLAIMED BY SELLER AND EXCLUDED 

FROM THIS AGREEMENT.

J.A. 404. The text of the “General Conditions” sheet otherwise uses regular capitalization.

The district court concluded that this language sufficed to provide a conspicuous disclaimer 

of any implied warranty of merchantability. Hill, 2020 WL 6193666, at *1.

On appeal, Hill concedes that the disclaimer was conspicuous. But he argues that it 

does not apply. He states that Certex did not disclaim a warranty “that the goods are made 

. . . in accordance with the specifications thereof supplied or agreed to by [the] buyer.” J.A. 

404. Yet he points to no evidence that the sling was not made to the buyer (Tencarva)’s 

specifications. Instead, he argues that the sling was not made in accordance with the 

specifications supplied by Certex—namely, the weight limit. But the exception to the 

disclaimer does not refer to specifications provided by Certex, so Hill’s argument is 

without merit.

B.

We also affirm the district court’s decision to grant summary judgment to Certex on 

Hill’s negligent-failure-to-warn-or-instruct claim.

USCA4 Appeal: 20-2129 Doc: 41 Filed: 02/15/2023 Pg: 7 of 13
8

In North Carolina, a plaintiff seeking to support a products-liability claim “based

upon inadequate warning or instruction” must prove several elements, including “that the 

manufacturer or seller acted unreasonably in failing to provide such warning or instruction” 

and “that the failure to provide adequate warning or instruction was a proximate cause of 

the harm for which damages are sought.” N.C. Gen. Stat. § 99B-5(a).

Hill argues that the district court erroneously determined that his injury was not 

proximately caused by Certex’s negligence. But the district court did not reach the question 

of causation because it concluded that Certex gave Hill adequate warning. Hill, 2020 WL 

6193666, at *2. And indeed, the undisputed facts show that the warnings provided with the 

sling that Hill used on the day of the accident—including both the warning label and the 

Safety Bulletin—instructed users to “ALWAYS” protect the sling from any edge, not just 

a “sharp” edge. J.A. 558, 598. There is no dispute that Hill failed to use any protective 

padding. Further, Hill testified that he read and understood the sling’s warning tag and 

Safety Bulletin. “Thus, Mr. Hill was aware of the very information he claims Certex was 

negligent in failing to include on the warning tag.” Hill, 2020 WL 6193666, at *2. 

Hill nevertheless contends that Certex’s history of providing warnings only against 

sharp edges created “critical confusion” that can support liability. Opening Br. at 17. He 

points to evidence that Hill and his coworkers believed that only sharp edges posed a 

problem. Further, he cites a 2009 article by one of his experts, Thomas Mackey, alerting 

the industry to “the dangers of sling cutting,” J.A. 971, as well as Mackey’s deposition

testimony that his tests showed that “slings will separate on a corner,” even one that is not 

sharp, J.A. 929. And Hill presents expert testimony that “an experienced user” will not 

USCA4 Appeal: 20-2129 Doc: 41 Filed: 02/15/2023 Pg: 8 of 13
9

reread a warning label,3 such that it did not matter if an updated label was attached to the 

sling Hill actually used. J.A. 1090. In other words, Hill argues that Certex’s earlier warning 

tags started the ball rolling when they specified that only sharp edges posed an issue, and 

Certex needed to do something more than update its warning label by removing the word 

“sharp” to terminate the causal path.

It may well be a best practice for companies aware of new dangers to bring them to 

the attention of their products’ users explicitly, such as through a training, rather than 

merely through updating a warning label. But Hill points to no legal authority that North 

Carolina law looks beyond the adequacy of the warning provided with the product in 

question. As noted, Hill must show that Certex “acted unreasonably in failing to provide 

[adequate] warning or instruction” and this failure “was a proximate cause of” his injuries.

N.C. Gen. Stat. § 99B-5(a).

Further, North Carolina law clarifies that Certex cannot be held liable where “[t]he 

use of the product giving rise to the product liability action was contrary to any express 

and adequate instructions or warnings delivered with, appearing on, or attached to the 

product or on its original container or wrapping, if the user knew or with the exercise of 

reasonable and diligent care should have known of such instructions or warnings.” Id. 

§ 99B-4(1)4 (emphasis added). The statute does not refer to earlier warnings or

3 Of course, Hill himself testified that he did read the warning label attached to the 

sling in question.

4 This statute “‘merely codif[ies] the common law doctrine of contributory 

negligence’ as it applies in products liability actions.” Nicholson v. Am. Safety Util. Corp., 

488 S.E.2d 240, 243 (N.C. 1997) (quoting Champs Convenience Stores, Inc. v. United 

USCA4 Appeal: 20-2129 Doc: 41 Filed: 02/15/2023 Pg: 9 of 13
10

instructions, but rather to those provided alongside the product that is the subject of the 

lawsuit. And even if North Carolina law has created such an exception to the plain language 

of the statute—a question we do not consider—Hill has cited no authority and made no 

argument on that point, thus waiving it.5

Hill does assert that our opinion in Fontenot v. Taser International supports his 

argument that, under North Carolina law, Certex needed to do more than quietly update its 

warning label. But that case is readily distinguishable. In Fontenot, a teenager died from 

cardiac arrest after a police officer used a taser on his chest. Fontenot v. Taser Int’l, Inc., 

736 F.3d 318, 321 (4th Cir. 2013). The police officer aimed at the teenager’s chest based 

on training provided by the police department, which in turn had relied on instructional 

materials supplied by the manufacturer (and defendant), Taser International. Id. at 321–24.

But Taser International knew better: it was aware of studies “in which researchers 

had concluded that the device posed a risk of ventricular fibrillation, a cause of cardiac 

Chem. Co., 406 S.E.2d 856, 860 (N.C. 1991)). We recognize that in many cases, whether 

a plaintiff was contributorily negligent is a question for the jury. Id. at 244. But here, the 

warning label and Safety Bulletin attached to the sling explicitly advised Hill to 

“ALWAYS protect slings in contact with edges.” J.A. 558, 598. There is no dispute that 

the sling was placed in contact with the edges of the plates and that Hill did not protect it. 

And on appeal, Hill has presented no argument that there is a jury question here, beyond 

his contention that Certex’s earlier warnings about “sharp” edges created confusion.

5 See Fed. R. App. P. 28(a)(8)(A) (arguments in opening brief must include citations 

to supporting authorities); Edwards v. City of Goldsboro, 178 F.3d 231, 241 n.6 (4th Cir. 

1999) (“Failure to comply with the specific dictates of [Rule 28(a)(8)(A)] with respect to 

a particular claim triggers abandonment of that claim on appeal.”); Hensley ex rel. North 

Carolina v. Price, 876 F.3d 573, 580 n.5 (4th Cir. 2017) (noting the mandatory nature of 

Rule 28(a)(8)(A)); Super Duper, Inc. v. Mattel, Inc., 382 F. App’x 308, 318 (4th Cir. 2010)

(per curiam) (“[W]e will not make arguments for [a party] that it did not make in its briefs.” 

(quoting O’Neal v. Ferguson Constr. Co., 237 F.3d 1248, 1257 n.1 (10th Cir. 2001))).

USCA4 Appeal: 20-2129 Doc: 41 Filed: 02/15/2023 Pg: 10 of 13
11

arrest, especially when the electrical current from the taser was applied near the subject’s 

heart.” Id. at 321. Yet it “did not alter its training materials to warn users of the [type of]

taser [in question] that shots to a person’s chest could result in ventricular fibrillation, or 

that use of the taser near a person’s heart should be avoided based on that risk.” Id. at 324–

25. In fact, while Taser International “revised its training materials and the [applicable]

taser operating manual before [the teenager]’s death, those revised documents did not 

provide warnings concerning the risk of ventricular fibrillation or cardiac arrest when the 

taser is fired at a suspect’s chest,” and the revised training material even “included a visual 

depiction of a police officer aiming the taser at the suspect’s chest.” Id. at 324 n.4. We 

concluded that Taser International could be held liable for a negligent-failure-to-warn 

claim under those circumstances. Id. at 336.

So Fontenot demonstrates that, where a product manufacturer is aware that a 

particular use of its product could lead to harm, but fails to update its warnings accordingly 

(and indeed, specifically suggests that such use is proper), it can be held liable when the 

anticipated harm occurs. Fontenot simply does not apply in this case, where the sling in 

question included an updated warning that Hill did not follow.

Hill further briefly argues that the warnings were inadequate because even if he had 

followed the advice to pad the sling, it would have failed. According to his expert, although 

Certex represented that the sling had a choker-hitch weight limit of 2,480 pounds—which 

should have been more than enough to support the 1,400 pounds of material Hill was trying 

to move—Certex failed to warn Hill that a corner or edge “should not be allowed to contact 

any part of the sling eye” because, if it does, the load limit is cut in half (here, to 1,240 

USCA4 Appeal: 20-2129 Doc: 41 Filed: 02/15/2023 Pg: 11 of 13
12

pounds). J.A. 1017. But Hill forfeited this argument by failing to raise it below.6 Ferguson 

v. City of Charleston, 308 F.3d 380, 396 (4th Cir. 2002).

Finally, Hill contends that Certex had a duty to instruct, not just a duty to warn, 

pursuant to a North Carolina statute that refers to “the failure to provide adequate warning 

or instruction.” N.C. Gen. Stat. § 99B-5(a) (emphasis added). And in his view, this duty 

meant that Certex needed to “effectively communicate” to end users “that any edge . . . 

could have cut the sling” by providing instruction “beyond warnings.” Opening Br. at 27. 

But he cites no legal authority to support the idea that, under North Carolina law, a product 

manufacturer must not only provide a proper warning label, but also offer instructions in 

the form of training to end users—and that if it does not, it can be held liable even where 

the end user read and understood, but failed to apply, the written warnings. In other words, 

he cites no authority to support the notion that the passing reference to “instruction” in 

section 99B-5(a) trumps North Carolina’s law of contributory negligence. Again, in the 

6 At oral argument, counsel claimed that Hill did raise this matter below, and pointed 

to several locations in the Joint Appendix. But those references are only to testimony or 

reports from Hill’s experts. Counsel failed to cite any legal arguments made below to 

preserve this issue. And our review of the summary-judgment briefing demonstrates that 

the legal arguments Hill pressed below on the matter of negligence focused entirely on the 

question of “sharp” edges, not on the effect of the load configuration on the weight limit. 

“‘If a party wishes to preserve an argument for appeal, the party must press and not merely

intimate the argument during the proceedings before the district court.’ In other words, the

party must raise the argument in a manner sufficient ‘to alert the district court to the specific

reason’ the party seeks relief.” CoreTel Va., LLC v. Verizon Va., LLC, 808 F.3d 978, 988 

(4th Cir. 2015) (alterations and citation omitted) (first quoting In re Under Seal, 749 F.3d 

276, 287 (4th Cir. 2014); then quoting United States v. Bennett, 698 F.3d 194, 199 (4th Cir.

2012)). Hill failed to do so here.

USCA4 Appeal: 20-2129 Doc: 41 Filed: 02/15/2023 Pg: 12 of 13
13

absence of citations to legal authorities supporting his position, Hill has waived our 

consideration of this argument. See Fed. R. App. P. 28(a)(8)(A).

III.

For the reasons stated, we affirm the decision of the district court.

AFFIRMED

USCA4 Appeal: 20-2129 Doc: 41 Filed: 02/15/2023 Pg: 13 of 13