SC20000, SC20001, SC20003 - R.T. Vanderbilt Co., Inc. v. Hartford Accident & Indemnity Co. ("These certified appeals, which present us with several significant questions of insurance law, arise from coverage disputes between the plaintiff, R.T. Vanderbilt Company, Inc. (Vanderbilt), and the defendants, who are numerous insurance companies (insurer defendants) that issued primary and secondary comprehensive general liability insurance policies to Vanderbilt between 1948 and 2008, stemming from thousands of underlying lawsuits alleging injuries from exposure to industrial talc containing asbestos that Vanderbilt mined and sold. Vanderbilt and the insurer defendants appeal, upon our granting of their petitions for certification, from the judgment of the Appellate Court affirming in part and reversing in part numerous interlocutory decisions made by the trial court in connection with the first and second phases of a complex trial between the parties. R.T. Vanderbilt Co. v. Hartford Accident & Indemnity Co., 171 Conn. App. 61, 75–76, 156 A.3d 539 (2017). On appeal, the insurer defendants claim that the Appellate Court improperly (1) upheld the trial court's adoption of a 'continuous trigger' theory of coverage for asbestos related disease claims as a matter of law and the trial court's related preclusion of expert testimony on current medical science regarding the actual timing of bodily injury from such disease, (2) upheld the trial court's adoption of an 'unavailability of insurance' exception to the 'time on the risk' rule of contract law, which provides for pro rata allocation of defense costs and indemnity for asbestos related disease claims, and (3) interpreted pollution exclusion clauses in certain insurance policies as applicable only to claims arising from 'traditional' environmental pollution, rather than to those arising from asbestos exposure in indoor working environments. In its appeal, Vanderbilt claims that the Appellate Court improperly construed occupational disease exclusions present in certain policies as not limited to claims brought by Vanderbilt's own employees. Because we conclude that the Appellate Court's comprehensive opinion properly resolved these significant issues, we affirm the judgment of the Appellate Court.")