2017-12-06_REPORT - M1984041 (2)

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EXHIBIT "A" SUMMARY OF 2017 ACTIVITIES Approximately 3 acres of previously reclaimed active pit highwall and waste dumps were backfilled in order to reduce the overall slope to 3:1 (H:V) and promote better re-vegetation. The area will be graded, slash spread on the slope, and hydroseed applied next spring. A ridge of good Gypsum on the west side of the active pit was prepped for recovery in 2017 and should be down to active pit level in the next few months. The west ridge is within the permitted disturbance area and was previously abandoned over quality concerns. Removal of the west ridge is critical to maximize gypsum recovery and provide access to additional reserves identified further east. Submittal of an amendment to expand the operation further east is anticipated for 2018. In response to a violation issued by Colorado Department of Public Health and Environment (CDPHE) a project to realign the main haulroad and upgrade sediment control near the main gate began in May. The realigned road is nearly complete, temporary sediment control and stabilization is in place for winter, and final sediment control and grading will be completed sometime early next spring. Haul roads were treated exclusively with mag-chloride for dust control in 2017. A street sweeping contractor is currently being used to help with pavement tracking throughout the year. Technical Revision 10 was approved for continued development and reclamation of the lower pit. The updated reclamation bond will be posted in the next few weeks with development and production commencing as weather allows. An additional 100 vertical feet of Gypsum will be recovered, within the existing disturbance footprint, and the original highwall backfilled and reclaimed to a 3:1 (H:V) slope. Approximately 450,000 tons of gypsum rock were shipped from the mine during 2017. t