RE:RE:RE:RE:RE:comparing contribution margins per ton (SLCA vs. NI) - 2014 Point taken on inventories, i agree we need more unfinished product on hand to ensure we keep production at full capacity. And yes sales are moving in the right direction but I see a bottleneck in producing more that what we are currently selling (just my own opinion there) and we have very little storage capacity at the plant. I would like to see more in the sales agreement side of things or we can see slowdowns in the production of the finished product (hurting margins).