US Copper Production Targeted for Q4, 2019

April: Pumpkin Hollow Progress and Construction Update

April 12, 2019

April: Pumpkin Hollow Progress and Construction Update

It’s been an exciting April so far: we’ve announced plans for an exploration program, we’re expecting our PFS for the Open Pit any day now and, of course, we continue to make excellent progress on the underground mine. Construction is progressing in a strong, steady fashion and we remain on track to enter production in Q4 of this year. Below is an update of recent activity on site.

East Main Shaft

We are making very good progress with lateral development on the 2850 and 2770 levels and have advanced over 650 feet on both levels since the last update. Importantly, we now have fully-mechanized mining on the 2850 level and are now just a few hundred feet from reaching the bottom of EN vent shaft

1000KV transformers have now been installed on both levels and we have completed construction of all sumps on the shaft bottom, 2770 level and 2850 levels. We also have a modified sump in place on the 2940 level.

In addition, we have developed several utility bays on the 2850 level, including the temporary shop.

Up next: complete excavation to the bottom of the EN vent shaft, begin ramping to the east ore bodies and begin mechanized mining on the 2770 level.

Lateral development on the 2850 level of the East Main shaft
Lateral development on the 2850 level of the East Main shaft

East-North Vent Shaft

Progress on the EN Vent Shaft has been particularly strong and we are now over 500 ft below surface.

Up next: continue sinking shaft and begin preparation to drive the Alimak from the 2850 level. The Alimak will be used to drive vertically up to intersect the East North Ventilation shaft and prepare the ore loading pocket.

Surface Works

The SAG mill pedestal is now complete and the Ball mill pedestal is almost finished. We have also finished pouring the Flotation foundation.

The foundations for the Thickener and fresh water areas have been completed and several pieces of critical components and equipment have arrived on site.

Dry stack tailings cell one is complete and is now in the process of being lined. The ore stockpile and surface water run off pond have been lined and completed.

Up next: Commence installation of equipment and start formwork for the ore stockpile loading hopper and for the filter press building

SAG Mill Discharge Pedestal Form Install - Cast In Steel Plate Install
Flotation Slab Final Inspections on Top Mat Rebar
SC2 Pond near Coarse Ore Stockpile Pad, prep for Liner Install
Thickener Tank mud slab forms

Please get in touch with any questions and be sure to subscribe to our mailing list to receive the latest news releases and updates as they are released.

David Swisher, SVP of Operations

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