
    LANTHEUS MEDICAL IMAGING, INC., Plaintiff—Appellant, v. ZURICH AMERICAN INSURANCE COMPANY, Defendant-Appellee.
    No. 15-1717
    United States Court of Appeals, Second Circuit.
    May 25, 2016
    
      FOR PLAINTIFF — APPELLANT: RUKESH A. KORDE, Covington & Bur-ling LLP, Washington, D.C. (William F. Greaney, Kevin King, Covington & Burling LLP, Washington, D.C.; Andrew A. Ruffi-no, Covington & Burling LLP, New York, NY, on the brief).
    FOR DEFENDANT — APPELLEE: PHILIP C. SILVERBERG (William D. Wilson, on the brief), Mound Cotton Wol-lan & Greengrass LLP, New York, NY.
    PRESENT: RALPH K. WINTER, RICHARD C. WESLEY, GERARD E. LYNCH, Circuit Judges.
   SUMMARY ORDER

Plaintiff — Appellant Lantheus Medical Imaging, Inc. (“Lantheus”) appeals from a decision of the United States District Court for the Southern District of New York (Failla, J.) granting summary judgment to Defendant — Appellee Zurich American Insurance Co. (“Zurich”) on an insurance coverage dispute that arose between the parties after Lantheus experienced a supply — chain disruption in late spring 2009. The supply — chain disruption occurred due to a fifteen — month shutdown of a National Research University nuclear reactor (“NRU Reactor”) that forced Lantheus to suspend dozens of production runs for one of its products. Lan-theus sought coverage from Zurich for the resulting losses, but Zurich denied the claim.

“Insurance policies are, in essence, creatures of contract, and, accordingly, subject to principles of contract interpretation.” In re Estates of Covert, 97 N.Y.2d 68, 76, 736 N.Y.S.2d 879, 761 N.E.2d 571 (2001). Under New York law, the interpretation of a contract “is a matter of law for the court to decide.” Int’l Multifoods Corp. v. Commercial Union Ins. Co., 309 F.3d 76, 83 (2d Cir. 2002) (internal quotation marks omitted); see also Parks Real Estate Purchasing Grp. v. St. Paul Fire and Marine Ins. Co., 472 F.3d 33, 42 (2d Cir. 2006) (“The initial interpretation of a contract is a matter of law for the court to decide.” (internal quotation marks and alteration omitted)).

“ ‘Where contractual language is ambiguous and subject to varying reasonable interpretations, intent becomes an issue of fact and summary judgment is inappropriate. ... Only where the language is unambiguous may the district court construe it as a matter of law and grant summary judgment accordingly.’” Palmieri v. Allstate Ins. Co., 445 F.3d 179, 187 (2d Cir. 2006) (quoting Thompson v. Gjivoje, 896 F.2d 716, 721 (2d Cir. 1990)). If the Court finds contract provisions to be unambiguous, then it must interpret those provisions in light of “their plain and ordinary meaning.” 10 Ellicott Square Court Corp. v. Mountain Valley Indem. Co., 634 F.3d 112, 119 (2d Cir. 2011) (internal quotation marks omitted)).

When an insurance contract contains an exclusion provision, the insurer generally bears the burden of proving that the claim falls within the scope of an exclusion by establishing that “the exclusion is stated in clear and unmistakable language, is subject to no other reasonable interpretation, and applies in the particular case.” Vill. of Sylvan Beach v. Travelers Indem. Co., 55 F.3d 114, 115-16 (2d Cir. 1995); see also Seaboard Sur. Co. v. Gillette Co., 64 N.Y.2d 304, 311, 486 N.Y.S.2d 873, 476 N.E.2d 272 (1984) (stating that exclusions “are not to be extended by interpretation or implication, but are to be accorded a strict and narrow construction”). After an exception to an applicable exclusion is raised, the burden shifts to the insured to establish coverage. Ment Bros. Iron Works Co. v. Interstate Fire & Cas. Co., 702 F.3d 118, 122 (2d Cir. 2012); see also Northville Indus. Corp. v. Nat’l Union Fire Ins. Co. of Pittsburgh, Pa., 89 N.Y.2d 621, 634, 657 N.Y.S.2d 564, 679 N.E.2d 1044 (1997) (“Shifting the burden to establish the exception conforms with an insured’s general duty to establish coverage where it would otherwise not exist[.]”).

The District Court’s analysis is thorough and sound. From the outset, the District Court drew all inferences in favor of Lantheus, accepting that “the breach occurred because of a ‘pressure surge ... actftng] upon an already weakened point.’” Special App’x 28 (alterations in original) (quoting Pis. Opp. to Summary Judgment at 10). It specifically declined to resolve certain outstanding factual ambiguities that were not necessary to decide Zurich’s summary judgment motion, including whether “General Corrosion precipitated the NRU Reactor shutdown.” Special App’x 36. Honoring the anti — concurrent causation language of Exclusion 5b, the District Court found as a factual matter (and based on agreement of both of Lantheus’s experts) “that a thinning over time of the aluminum wall of the reactor vessel, referred to as [redacted] Penetration, was a necessary component to the through — wall breach that occurred after a rapid shift in pressure.” Special App’x 29-30. The District Court then concluded as a legal matter that the definition of “corrosion” as used in Exclusion 5b “fully embraces” this condition, including Lantheus’s assertion that an electrochemical cell caused the [redacted] Penetration. Special App’x 36.

Lantheus argues that Exclusion 5b must be read as a whole and “generally connotes a process by which material is gradually consumed or worn away, either by external forces or the material’s own inherent qualities.” Appellant’s Br. 41; see also City of Burlington v. Indem. Ins. Co. of N. Am., 332 F.3d 38, 49-50 (2d Cir. 2003) (reading a similar exclusion as a whole and “in light of the ... history of judicial interpretation of all — risks policies,” and holding such exclusion “limited coverage to externally caused losses” and “excluded] intrinsically caused losses from ... coverage”). Lantheus also argues that the ordinary meaning of corrosion is a “gradual process” that does not occur rapidly. See id. at 36-37.

Relying on expert testimony provided by Lantheus’s metallurgist and nuclear engineer, it was not error for the District Court to draw the factual conclusion that “the [redacted] Penetration contribute^] concurrently or in any sequence to the ... damage.” Special App’x 36 (internal quotation marks omitted). Nor was it error for the District Court to grant summary judgment to Zurich on the basis of its finding “that the formation of the [redacted] Penetration and its concurrent involvement in the through — wall breach that shut down the NRU Reactor is sufficient to bring the loss within the corrosion exclusion.” Special App’x 36-37. Taking the facts in the light most favorable to Lantheus, the [redacted] Penetration of the reactor vessel wall took approximately twenty — nine days to occur and was caused at least in part by the differential aeration cell. See Appellant’s Reply Br. 6. Thus, there is no question of material fact that the NRU Reactor shutdown falls into Exclusion 6b, even accepting Lantheus’s proposed version of events.

We have considered all of the Appellant’s remaining arguments and find them to' be without merit. Accordingly, we AFFIRM the judgment of the District Court. 
      
      . We review de novo a district court's grant of summary judgment. See Lynch v. City of New York, 737 F.3d 150, 156 (2d Cir. 2013). We assume the parties’ familiarity with the facts and record below, which we reference only as necessary to explain our decision.
     
      
      . Before reaching these issues, the District Court determined as a threshold matter that it need not resolve the issue of whether the contingent business income loss coverage ("CBI”) provision of the Policy required total cessation of the operations at the Billerica Facility before Lantheus could collect insurance from a covered loss. The District Court observed that "[i]n 2005, the Second Circuit observed that ‘CBI coverage is a relatively recent development in insurance law and its scope has not yet been fully delineated by the courts,' " Special App’x 23 (quoting Zurich Am. Ins. Co. v. ABM Indus., Inc., 397 F.3d 158, 168 (2d Cir. 2005)), and further that "[t]his observation remains true ten years later, particularly in the context of importing conventions from the field of ordinary [business income loss coverage ("BI”)] insurance.” Special.App’x 23,
      We need not resolve this novel issue to dispose of the present case. Like the District Court, we assume for purposes of this appeal that Lantheus is covered under the CBI provision but find ultimately that Exclusion 5b operates to foreclose coverage under the Policy.
     