Inventory

9 Months Ended

Sep. 30, 2011

Inventory

Inventory Disclosure [Text Block]

(5)   Inventories

Inventories consisted of the following at September 30, 2011 and December 31, 2010:

	September 30, 2011		December 31, 2010
Raw materials	$	249,929	$	260,972
Work in progress		1,216,279		1,388,550
Finished goods		109,065		32,318
	$	1,575,273	$	1,681,840

Work in progress includes cobalt-60 which is located in the U.S. federal government’s Advanced Test Reactor (ATR) located outside of Idaho Falls, Idaho.  The cobalt is at various stages of irradiation with some cobalt near completion and some cobalt requiring several more years to complete.  At September 30, 2011 and December 31, 2010, the cobalt had a carrying value of $886,882 and $1,007,056, respectively, which is based on accumulated costs allocated based on the length of time the cobalt remains in the reactor.