Long Canyon is a sediment-hosted disseminated gold deposit.

The gold mineralization at Long Canyon is best described as sediment-hosted, Carlin-type gold mineralization.

The mineralization identified at Long Canyon shares many of the characteristics of Carlin-type gold mineralization, including:

• Stratigraphic control on mineralization - mineralization is hosted primarily in limestone, particularly in silty, thin-bedded units;

• Structural control on mineralization - mineralization occurs in karstic cavities, collapse breccias, and anticlinal fold hinges;

• Geochemical association - elevated arsenic, mercury, antimony, and thallium accompany the gold mineralization, while silver and base-metal concentrations are low; and

• Alteration - mineralization is associated with decalcification, silicification/jasperoid, oxidized variants of pyrite and arsenical pyrite or arsenopyrite, and clay alteration.

The Long Canyon project also displays some characteristics that are unlike typical Carlin-type gold deposits. The prevalent association of hematite with gold mineralization at Long Canyon is not a common characteristic among all Carlin-type deposits, although this phenomenon is associated with weathered/oxidized portions of some of the deposits.

The Long Canyon available mining fleet consists of two shovels and ten 240-ton haul trucks. Commercial production at Long Canyon was achieved in November 2016.

Oxide ore with suitable cyanide solubility is treated on a heap leach pad.

Higher grade ore would be milled. This process would involve the following steps:

* Crushing;
* Grinding;
* Leaching and carbon adsorption using CIP (carbon-in-pulp) and CIC (carbon-in-column)
processes;
* Gold recovery (off-site);
* Counter-current decantation; and
* Cyanide destruction.

The loaded carbon will be transported to Newmont's carbon stripping and refining facility at Carlin for final processing, resulting in the production of gold doré bars.