Work in process inventory represents materials that are currently in the process of being converted to a saleable product and includes inventories in our milling process. This inventory represents excavated stibnite ore that has been removed from the pad, crushed, bagged in one ton storage bags and stored in 40 foot containers at our onsite facilities to be hauled to a third party mill site for processing. In-process material is measured based on assays of the material fed into the process and the projected recoveries of the respective plants. In-process inventories are valued at the average cost of the material fed into the process attributable to the source material coming from the mines and stockpiles, plus the in-process conversion costs, including applicable depreciation relating to the process facilities incurred to that point in the process.
The Company categorizes all of its inventory as work in process. The Company processes its inventory into which its ships to a refiner for final processing, and therefore it never holds finished goods.