suggestion: now probably you don't have to publish the sheet everyday, a graph is enough.

Iron is the hardest Resource to acquire, requiring a LOT of effort to extract it

This is not the only factor. People are producing a lot of iron currently compared to they are consuming. Lot of supply and very little demand.

Remember in the 2007, detroit was producing a lot of big trucks, but we had a oil shock and followed by the financial crisis. Nobody bought them and many 'brands' had to be shut down.

There is always two sides to the price: Supply and Demand. Sell side and Buy side in financial market, you are only talking about Supply :)