Financial - Statement of COS

I'm trying to develop a Statement of COS (start with begining
inventory
add purchases, which includes Labor, Burden and Materials, subtract
ending inventory to calculate COS). I can get the Inventory numbers
and the additions for Labor and Burden, but I am having trouble
getting
material purchases.
Does anyone have a Report Builder report that accumulates the
Purchases
for a period of time that go into Inventory and WIP?
Thanks,
Brian W. Larcom, CFO
Metallized Carbon Corporation
Ossining, NY