On June 6, 2011 Gryphon Gold officially began construction of the Borealis Oxide Heap Leach Mine.
On September 23, 2011 we began the heap leaching process by dripping cyanide solution onto the first constructed heap. This was a significant event to go from ground breaking to heap leaching in 110 days. On Sunday, September 24 we received our first return fluid from the heap leach pad. As time progresses the flow will increase and the metal concentration will increase.
The Borealis Oxide Heap Leach Operation began gold production in March 2012 with the pouring of two doré bars from loaded carbon. During fiscal 2012, the Company sold 32 tons of loaded carbon containing approximately 1,580 gold ounces. In the first quarter of fiscal 2013, 3,280 gold equivalent ounces were sold from the ADR plant.
Please return to our web site often and watch as the construction pictures are updated and as we continue to report on our construction advances.
This is a photo of the heap leach lines dripping the cyanide solution onto the gold and silver bearing ore. For fluid to return at the same rate that it goes onto the heap, the heap must become saturated which will require several days.
The fluid drains from the bottom of the heap and flows through a pipe to the pregnant pond. The fluid flowing from the pipe is pregnant solution containing gold and silver from the first heap. Over a period of several days the flow will increase to the same level as fluid being placed onto the heap.
The $3M Private Placement has allowed for the early construction of the ADR. The equipment is being manufactured in Salt Lake City, UT while work progresses on site. This picture shows the pouring of the building footings and the initial floors that will be poured.
This overview of the leach pad shows the Phase 1A pad near completion. In the foreground the over liner is being placed. At the midpoint, the drain piping is being installed. At the far end the final clay layer is complete and the final liner is being installed.
These culverts have been installed under the access road from the main gate to the heap leach pad and mining area. The culverts will hold the fluid process lines between the leach pad and the processing ponds. Photo taken on July 28, 2011.
This July 28, 2011 photo taken from atop the Pyramid pad shows the progress in placing the clay lining on the heap leach pad. The HDPE liner will go over the clay and installation will be during the week of August 1, 2011.