MINERALS TECHNOLOGIES INC. AND SUBSIDIARY COMPANIES  NOTES TO CONSOLIDATED FINANCIAL STATEMENTS  Note 15. Leases Note 16. Litigation Environmental Matters The Company has several non-cancelable operating leases, primarily for office space and equipment. Rent expense  amounted to approximately $4.5 million, $5.0 million and $5.3 million for the years ended December 31, 2013, 2012 and  2011, respectively. Total future minimum rental commitments under all non-cancelable leases for each of the years 2014  through 2018 and in aggregate thereafter are approximately $3.5 million, $2.6 million, $2.2 million, $1.2 million, $1.1  million, respectively, and $3.9 million thereafter. Total future minimum rentals to be received under non-cancelable subleases  were approximately $1.0 million at December 31, 2013.  Total future minimum payments to be received under direct financing leases for each of the years 2014 through 2018 and  the aggregate thereafter are approximately: $2.0 million, $0.9 million, $0.4 million, $0.1 million, $-- million and $-- million  thereafter.  Certain of the Company's subsidiaries are among numerous defendants in a number of cases seeking damages for  exposure to silica or to asbestos containing materials. The Company currently has 72 pending silica cases and 15 pending  asbestos cases. To date, 1,394 silica cases and 34 asbestos cases have been dismissed. Two new asbestos cases were filed in  the fourth quarter of 2013. Most of these claims do not provide adequate information to assess their merits, the likelihood  that the Company will be found liable, or the magnitude of such liability, if any. Additional claims of this nature may be  made against the Company or its subsidiaries. At this time management anticipates that the amount of the Company's  liability, if any, and the cost of defending such claims, will not have a material effect on its financial position or results of  operations. The Company has not settled any silica or asbestos lawsuits to date. We are unable to state an amount or range of  amounts claimed in any of the lawsuits because state court pleading practices do not require identifying the amount of the  claimed damage. The aggregate cost to the Company for the legal defense of these cases since inception continues to be  insignificant. The majority of the costs of defense are reimbursed by Pfizer Inc. pursuant to the terms of certain agreements  entered into in connection with the Company's initial public offering in 1992. Of the 15 pending asbestos cases, all allege  liability based on products sold largely or entirely prior to the initial public offering, and for which the Company is therefore  entitled to indemnification pursuant to such agreements. Our experience has been that the Company is not liable to plaintiffs  in any of these lawsuits and the Company does not expect to pay any settlements or jury verdicts in these lawsuits. On April 9, 2003, the Connecticut Department of Environmental Protection issued an administrative consent order  relating to our Canaan, Connecticut, plant where both our Refractories segment and Specialty Minerals segment have  operations. We agreed to the order, which includes provisions requiring investigation and remediation of contamination  associated with historic use of polychlorinated biphenyls ("PCBs") and mercury at a portion of the site. We have completed  the required investigations and submitted several reports characterizing the contamination. We are now conducting a site- specific risk assessment required by the regulators. We believe that the most likely form of overall site remediation will be to leave the existing contamination in place  (with some limited soil removal), encapsulate it, and monitor the effectiveness of the encapsulation. We anticipate that a  substantial portion of the remediation cost will be borne by the United States based on its involvement at the site from 1942  – 1964, as historic documentation indicates that PCBs and mercury were first used at the facility at a time of U.S. government  ownership for production of materials needed by the military. Though the cost of the likely remediation remains uncertain  pending completion of the phased remediation decision process, we have estimated that the Company’s share of the  cost of  the encapsulation and limited soil removal described above would approximate $0.4 million, which has been accrued as of  December 31, 2013.  The Company is evaluating options for upgrading the wastewater treatment facilities at its Adams, Massachusetts plant.  This work has been undertaken pursuant to an administrative Consent Order originally issued by the Massachusetts  Department of Environmental Protection (“DEP”) on June 18, 2002. This order was amended on June 1, 2009 and on June 2,  2010. The amended Order includes the investigation by January 1, 2022 of options for ensuring that the facility's wastewater  treatment ponds will not result in unpermitted discharge to groundwater. Additional requirements of the amendment include  the submittal by July 1, 2022 of a plan for closure of a historic lime solids disposal area. Preliminary engineering reviews  completed in 2005 indicate that the estimated cost of wastewater treatment upgrades to operate this facility beyond 2024 may  be between $6 million and $8 million. The Company estimates that the remaining remediation costs would approximate $0.4  million, which has been accrued as of December 31, 2013.  F-25 