INVENTORIES

The Company carries items in its inventories at the lower of cost or market value. If market value in any period falls below the carrying value, the carrying value of the inventory item is reduced to its market value.

For purposes of inventory accounting, the market value of inventory is generally deemed equal to the Company’s current cost of replacing the inventory, provided that: (1) the market value of the inventory may not exceed the estimated selling price of such inventory in the ordinary course of business less reasonably predictable costs of completion and disposal, and (2) the market value may not be less than net realizable value reduced by an allowance for a normal profit margin. No reduction to inventory value was necessary in the first three months of 2016 or 2015.

The costs of mined PGM inventories as of any date are determined based on combined production costs per ounce and include all inventoriable production costs, including direct labor, direct materials, depletion, depreciation and amortization and other overhead costs relating to mining and processing activities incurred as of such date. Costs are aggregated and averaged for mined material carried in inventory.

The costs of PGM recycling inventories as of any date are determined based on the acquisition cost of the recycled material and include all inventoriable processing costs, including direct labor, direct materials, depreciation and third-party refining costs which relate to the processing activities incurred as of such date. Costs incurred are allocated and tracked separately for each specific lot of recycling material (including material tolled on behalf of others).

Inventories reflected in the accompanying balance sheets consisted of the following:



	March 31,		December 31,
(In thousands)	2016		2015
Metals inventory
Raw ore	$	4,490	$	4,234
Concentrate and in-process	55,888		43,727
Finished goods	24,473		32,618
Total metals inventory	84,851		80,579
Materials and supplies	20,334		21,493
Total inventory	$	105,185	$	102,072