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NewFields <br /> Perspective.Vision,Solutions. <br /> May 8, 2017 <br /> NewFields Project No. 475.0106.013 <br /> Newmont Mining Corporation <br /> Cripple Creek&Victor Gold Mine <br /> P.O. Box 191 <br /> Victor, Colorado 80124 <br /> Attention: Steve Blaskovich <br /> Project Manager <br /> RE: High Grade Mill Secondary Containment Modification <br /> Record of Construction Report <br /> Dear Mr. Blaskovich, <br /> As requested by Cripple Creek and Victor Gold Mine (CC&V), NewFields documented the <br /> installation of the High Grade Mill (HGM) Secondary Containment Modification. The secondary <br /> containment modification was designed by others for Newmont Mining Corporation. <br /> Construction for this project was completed by April 21, 2017 and the installation occurred <br /> between March 20, 2017 and April 21, 2017. <br /> This letter serves as record of construction report for this project and documents the <br /> construction activities for the HGM Secondary Containment Modification. All construction <br /> materials were verified to be in accordance with design drawings issued by others (Attachment <br /> A) and Applicable standards prior to beginning installation. A NewFields representative made <br /> three inspections during the installation, verifying the construction activities met in intent of <br /> the proposed design. <br /> SECONDARY CONTAINMENT MODIFICATION <br /> The HGM Secondary Containment Modification was performed for the Leach Area in southwest <br /> corner of the facility. Extending the containment vertically was performed using a continuous <br /> -inch A36 steel plate bolted to the stem wall with neoprene rubber placed between the steel <br /> and concrete. The mounting surface of the concrete for the neoprene rubber was roughened <br /> using a grinder and cleaned prior to installation. Three continuous %-inch diameter silicon <br /> beads were placed between the concrete and neoprene rubber perpendicular to the stem wall. <br /> All bends and plate fabrication was performed at an offsite facility in accordance with design <br /> drawings. The steel plate and neoprene rubber containment modification was constructed in <br /> accordance with the details and sections on page 2 of the Construction Drawings in Attachment <br /> COwww.NewFields.com 9400 Station Street,SUite 300,Lone Tree, <br />