Inventories

The components of inventory as of April 30, 2016 and October 31, 2015 consisted of the following:



	April 30, 2016		October 31, 2015
Raw materials	$	28,079	$	29,103
Work-in-process ⁽¹⁾	38,143		36,651
Inventories	$	66,222	$	65,754


(1)	Included in work-in-process as of April 30, 2016 and October 31, 2015 was $15.2 million and $13.3 million, respectively, of completed standard components.

Raw materials consist mainly of various nickel powders and steels, various other components used in producing cell stacks and purchased components for balance of plant. Work-in-process inventory is comprised of material, labor, and overhead costs incurred to build balance of plant components, fuel cell stacks and modules, which are subcomponents of a power plant.