Mobil Exploration and Producing U.S., Inc. (“Mobil”), sued Cajun Construction Services, Inc. (“Cajun”), to recover money paid to Cajun for deliveries of limestone, alleging that Cajun had short-loaded those deliveries. After a bench trial, the district court found in favor of Cajun and dismissed Mobil’s suit with prejudice. Mobil appeals the judgment, and we reverse and remand.
I
For seven years, Cajun supplied Mobil with limestone for its operations in southern Louisiana. Mobil ordered the limestone in fourteen-cubie-yard or twenty-four-cubie-yard loads. 1 Cajun billed Mobil by the yard, and Mobil paid Cajun’s bills.
*98 Mobil later received information suggesting that Cajun had loaded the deliveries of limestone short, and Mobil then conducted an audit of Cajun’s records to determine whether Cajun had delivered the proper quantities of limestone. Mobil discovered that Cajun had discarded all the primary documents that identified specifically each load delivered to Mobil; only the records of Cajun’s purchases from its own suppliers were available. Mobil analyzed those supplier records, determined the weights and corresponding cubic yardages of Cajun’s purchases, and also attempted to correlate those purchases from suppliers with deliveries to Mobil. Based on this analysis, Mobil concluded that Cajun had short-loaded its deliveries to Mobil, and, when Cajun did not refund the value of the claimed shortfall, Mobil sued Cajun for the alleged overpayments.
At trial, Mobil introduced evidence that it ordered limestone from Cajun in either fourteen-yard or twenty-four-yard quantities. 2 Mobil then introduced evidence of over 3400 loads of limestone that Cajun had obtained at third-party suppliers both for its own uses and for deliveries to customers. That evidence included scale tickets indicating the actual weight of the limestone that Cajun had loaded into its trucks. The evidence also suggested that the average load for Cajun’s large trucks used for deliveries to Mobil and other Cajun customers was less than twenty-four cubic yards, and that the average load for Cajun’s small trucks was less than fourteen cubic yards. Mobil also introduced evidence that Cajun loaded its trucks at its own yards in the same manner that it loaded its trucks at the third-party suppliers. In response, Cajun introduced evidence that it routinely loaded its trucks by using a front-end loader with a “3-yard bucket” and counted the number of buckets to ensure proper loading. 3
Rather than relying solely on its proffered evidence of Cajun’s routine practice of loading its trucks short, Mobil further attempted to prove by correlation that Cajun had directly delivered to Mobil from the third-party suppliers. 4 In response, Cajun offered testimony to show that it routinely delivered from its own yards to its customers and not from third-party suppliers. Further, Tommy Angelle, Cajun’s co-owner, attempted to show by correlation that the third-party loads which Mobil believed it had received had actually gone to other Cajun customers. 5 Cajun also offered testimony from its own truck drivers and a Mobil contractor suggests ing that Cajun typically loaded the deliveries for Mobil properly from its own yards. Because Cajun had discarded its records of the individual loads, neither Mobil nor Cajun could show directly which loads went to Mobil sites and how much those loads had contained.
After the bench trial, the district court concluded that Mobil had not proven that Cajun had short-loaded deliveries of limestone to Mobil sites. Consequently, the district court dismissed Mobil’s suit with prejudice. Mobil appeals, arguing that the district court erred by 1) refusing to consider its proffered evidence of the manner in which Cajun routinely loaded its trucks, and 2) holding Mobil to an improperly high Stan *99 dard in its proof of its entitlement to and amount of damages.
II
Mobil argues that the district court erred in its analysis of the law applicable to its suit. First, Mobil contends that the district court failed to consider evidence, as required by Federal Rule of Evidence 406, of Cajun’s routine practice of loading its trucks in a particular manner. Next, Mobil asserts that the district court imposed an improperly high standard for Mobil’s proof of damages.
Mobil argues that the district court’s finding that Cajun had not short-loaded its deliveries of limestone to Mobil is legally erroneous. Although we ordinarily review the trial court’s findings of fact for clear error,
Anderson v. City of Bessemer City,
Mobil first asserts that the trial court erred in refusing to consider its proof of Cajun’s routine practice of loading its trucks in a particular manner. Habit evidence is relevant to prove that a business acted in a certain way. Fed.R.Evid. 406.
Evidence of the habit of a person or of the routine practice of an organization, whether corroborated or not and regardless of the presence of eyewitnesses, is relevant to prove that the conduct of the person or organization on a particular occasion was in conformity with the habit or routine practice.
Id.; see also McCormick on Evidence
§ 195, at 351 (John W. Strong ed., 4th ed. 1992) (explaining that habit or routine practice “denotes one’s regular response to a repeated situation”). “Rule 406 allows the introduction of evidence of the habit of a person for the purpose of proving that the person acted in conformity with his habit on a particular occasion.”
Reyes v. Missouri Pac. R. Co.,
To obtain a Rule 406 inference of the routine practice of a business, a plaintiff must show a sufficient number of specific instances of conduct to support that inference.
Reyes,
In this case, Mobil provided invoices for over 3400 of Cajun’s loads of limestone obtained from third-party suppliers. Mobil introduced evidence to show that Cajun invariably loaded its trucks in the same manner and to the same level when Cajun obtained limestone from a third-party supplier. Mobil provided weight scale tickets showing that Cajun typically loaded either approximately fourteen-ton or twenty-five-ton loads at third-party suppliers. 11 Cajun’s own witnesses testified that they loaded their trucks to the same level at Cajun’s own yards as they did at the third-party yards. 12 Mobil offered this evidence to show that, if Cajun always loaded its trucks in the same manner, and the third-party loads always held less than fourteen yards or twenty-four yards, then the loads from Cajun’s yards must also have held less than fourteen or twenty-four yards, depending on the size load ordered. Yet the district court refused to consider this evidence in determining whether Cajun had short-loaded its trucks when it made deliveries to Mobil. When Mobil presented its evidence and attempted to explain the purpose and function of habit evidence, the district court responded:
The court can’t render a judgment, Mr. Arceneaux [Mobil’s attorney], against somebody for a sum certain of money based on something that is predicated upon a habit.
Other statements by the district court similarly indicate that the district court would not accept evidence of routine practice as support for Mobil’s allegations. 13 The district court refused to consider the inference properly raised by Mobil that, if Cajun routinely loaded all of its deliveries short, Cajun must also have short-loaded its deliveries to Mobil. Instead, the district court allowed Mobil to use its evidence of routine practice only “to show what the average small truckload or the average large truckload used by Cajun was, how many yards it contained.” What the district court did not allow Mobil to use its evidence to prove was that because *101 those average small and large truckloads were less than fourteen or twenty-four cubic yards, respectively, then Cajun in compliance with its routine practice must have loaded less than fourteen or twenty-four cubic yards when it delivered to Mobil. 14 Moreover, instead of allowing Mobil to satisfy the Rule 406 requirement that Mobil demonstrate Cajun’s routine practice with evidence of loads to all destinations, not merely those to Mobil, the district court held that evidence of transactions not positively traceable as being deliveries to Mobil was irrelevant. 15 Accordingly, because the district court failed to apply Rule 406 properly, 16 we must reverse. On remand, the district court should consider Mobil’s evidence under Rule 406 and determine, in light of all the evidence, including Mobil’s Rule 406 evidence, whether Mobil has established Cajun’s routine practice for loading its trucks, and, if so, what implications that determination creates for the ultimate fact issues. 17
Mobil further contends that the district court erred in deciding that, because Mobil could not prove by direct evidence that loads to Mobil had been short-loaded, Mobil could not sufficiently prove any damages. The district court stated in its decision that “[t]he documentation simply is not there for Mobil to rebut the testimony of Mr. Angelle, Cajun’s truckdrivers, and Mr. Lamy” who testified that, because Cajun used a front-end loader with a “3-yard bucket” and routinely delivered from its own yards to its customers, it must have used the “3-yard bucket” method and delivered to Mobil from its own yards. The district court held that even if Mobil demonstrated how Cajun routinely loaded limestone irrespective of who the final customer was, Mobil must “further show that they did the same thing when they delivered to Mobil.” Under Louisiana law, the plaintiff must prove damages with reasonable certainty,
18
but this merely means that the plaintiff
*102
must prove damages by a preponderance of the evidence as in other civil contexts.
19
A plaintiff may prove a business’ conduct with habit evidence alone; direct evidence is not necessarily required.
Loughan v. Firestone Tire & Rubber Co.,
*103
Cajun argues that Mobil’s proffered basis for damages is insufficient under
Martin v. T.L. James & Co.,
The method employed by the defendant in arriving at the amounts of the claimed shortages is simply to take the total figures supplied to it by the Department of Highways of materials used in the road project, and deduct the amount of materials bought from and supplied by a number of other suppliers, and then by a complicated system of allowances for moisture content, stockpile losses, recoveries from a cave in, it comes up with a figure which represents the amount of material supplied by [the plaintiff], and thereby determines his shortage.... [T]here is nothing to convince this Court that the measurements of material supplied by such parties were any more accurate than those made by [the plaintiff].
Id.
Ill
For the foregoing reasons, we REVERSE the judgment of the district court and REMAND for further consideration consistent with this opinion.
Notes
. The evidence revealed that Cajun typically ordered limestone from its suppliers by the ton. *98 Both parties introduced evidence of the appropriate conversion by which the tonnages could be converted to cubic yards. These conversion factors ranged from approximately 1.2 to 1.5 tons per cubic yard.
. Cajun used two sizes of trucks for its limestone deliveries. It used its smaller trucks for the "fourteen-yard” deliveries and its larger trucks for the "twenty-four-yard” deliveries. The parties disagreed as to what were the actual and utilized capacities of those trucks.
. Mobil also introduced evidence suggesting that Cajun's trucks either physically could not carry a fourteen- or twenty-four-yard load, or if physically possible, did not because the truck would have grossly violated state motor vehicle weight restrictions. Further, Mobil presented evidence that the "3-yard bucket" with which Cajun loaded its own trucks had a maximum capacity of only 2.3 yards.
. As the basis for its correlation, Mobil relied on the records of Cajun's purchases from the third-party suppliers.
. Angelle also used the records of Cajun's purchases from its third-party suppliers. Because Cajun had discarded its records of its deliveries to Mobil, neither party could show direct documentary evidence of the deliveries to Mobil.
.
Accord Tyler v. Insurance Co. of N. Am.,
.
See Jones v. Southern Pac. R.,
.See also United States
v.
Newman,
.
See United States v. West,
.
See West,
. Using the same average Conversion factors as did the district court, these typical loads would convert as follows:
14 tons/1.42 tons per cubic yard = 9.86 cubic yards
25 tons/1.42 tons per cubic yard = 17.61 cubic yards
. Mr. Angelle testified;
Q: Let's talk in terms of a twenty-four (24) yard load. Tell me whether you know whether that load level looks different when it’s loaded in your yard versus when it’s loaded at a third-party yard.
A: No, sir. Twenty-four (24) yards is twenty-four (24) yards.
Q: Are you telling me that you think the load would look the same it if was twenty-four (24) yards loaded in your yard or twenty-four (24) yards loaded in a third-party yard?
A: They would look the same, yeah.
Mr. Miller, representing all of Cajun's truckdri-vers, testified:
Q: Is it your testimony that the loads in the trucks looked the same to you when you loaded them in Cajun’s yards as well as when you loaded them in third-party yards?
A: Yes, sir.
. For example, when Mobil explained that "[t]he purpose of all of this evidence is that regardless of whether Cajun was delivering to Mobil or someone else, Cajun’s practice routinely was to pick up in these weight ranges ...,” the district court replied, “I don’t follow that reasoning.... [TJhis doesn't say anything, does it, about that [referring to Cajun’s routine practice of loading all deliveries short].”
. It is this inference which Rule 406 explicitly allows and which the district court explicitly refused to consider.
. For example:
THE COURT: What is the purpose of documents showing sales to, for instance, Acadia-na Shell? It has nothing to do with this case.
MR. ARCENEAUX: Well, Your Honor, they are documents — they are sales from Acadia-na Shell to Cajun. Now, a number of those have been related further to transactions to Mobil. But as I was explaining this morning, they’re also introduced to establish the truck sizes that Cajun was routinely running.
THE COURT: Sales from Acadiana Shell to Cajun that had nothing to do with this case, what's the purpose of putting them in here? And why should the Court have to consider those things?
Later, when Mobil attempted to again explain the purpose of evidence of routine practice:
MR. ARCENEAUX: That's the point of the records. We’re working from what we know the trucks had in them.
THE COURT: Well, what do you know they had in them? You don’t know what the trucks that went to Mobil had in them ... Well, let's stick to those that you know went to Mobil. I think that what went to anybody else is irrelevant. If you have a practice you can show they loaded Mobil’s trucks, fine.
If you can't, I don’t know what relevance it has to this case. I simply don't see it.
. Indeed, although the district court did not consider Mobil’s evidence of a routine practice of Cajun, the district court did consider Cajun’s evidence of its own routine practice of loading its trucks at its own yards. Because Mr. Angelle’s testimony that Cajun routinely delivered from its own yards was based only upon inferences derived from third-party-supplier documentation and not his independent recollection of any individual deliveries to Mobil, concluding that Cajun must have delivered to Mobil from its own yards required a Rule 406 inference.
. Mobil also contends that the district court erred in concluding that Cajun had properly loaded the trucks. In its judgment memorandum, the district court stated that Cajun's witnesses had testified "that the trucks were loaded with a 3 cubic yard front end loader and the number of bucketloads was counted to insure that Mobil obtained the yardage that it had ordered.” It is not clear, however, whether the district court addressed the evidence, both documentary and testimonial, showing that the front-end loader actually used by Cajun had a maximum capacity of only 2.3 cubic yards. It is also unclear whether the district court addressed the documentary and testimonial evidence showing that at least some of Cajun’s trucks were physically incapable of holding a proper load of limestone as ordered by Mobil. Given that we are remanding to the district court to consider all the evidence, including Mobil's evidence of routine practice, we do not address this contention.
. Nat
Harrison Assocs. v. Gulf States Utils. Co.,
. Under Louisiana law,
It must appear reasonably certain that the amount of damages rests upon a certain basis. Such proof need only be a preponderance of the evidence; proof by direct or circumstantial evidence is sufficient to constitute a preponderance when, taking the evidence as a whole such proof shows that the facts or causation sought to be proved is more probable than not.
Hall,
Accordingly, we reject Cajun’s argument that Mobil must "prove its case by direct proof, and to legal certainty, both the fact and amount of its losses.” The cases cited by Cajun do not support its argument, and the applicable law clearly allows for circumstantial evidence.
. We also note that, during a discussion with counsel, the court stated:
"Do you think that this is going to prove that on certain days, on a certain sale made by Cajun to Mobil, they sent a truck over there loaded with so many tons, that I'm going to take an average? I don't think that's possible. You can't take an average.”
It is unclear whether the district court was refusing to allow Mobil to prove Cajun's routine practice with average loads or whether the district court was refusing to assess damages based on an average shortfall calculated over all loads to Mobil. Our analysis of Rule 406 has addressed the first issue, and we note that, if Mobil proves by Rule 406 evidence that Cajun routinely short-loaded its trucks, the district court may use averages and formulas to assess damages. Although the burden is on the plaintiff to prove damages,
Borden, Inc. v. Howard Trucking Co.,
.
See also Nat Harrison Assocs.,
. Cajun also contends that we should sanction Mobil for filing a frivolous appeal. Given that we hold the Mobil’s appeal is meritorious, we deny Cajun’s motion for sanctions.
