Ordan

Ordan is a dwarf who works in the blast furnace factory on the east side of Keldagrim, the dwarven capital city. Ordan runs the Ore Seller shop, which stocks a variety of ore that can be used for smithing. He is a popular destination for players smithing at the blast furnace.

Following the September 2009 shop updates Ordan's store behaves like all other stores. You can sell noted ores here now and buy them back without fear of another player buying your stock. Ordan can still un-note your noted ores directly (up to mithril) for a price. About every minute, a dwarven miner will arrive and re-supply Ordan with a single type of ore, but this will not update any individual's store interface. His maximum stock for each type of ore is 100.

Ordan sells ore at a variable rate based on GE Market prices.

Based on this information, if you use the shop interface to un-note your ores, it is beneficial to keep stocks very near 100.

When playing the blast furnace, do not rely on the restock rate for your ores. It takes a very long time for ores to restock. Likewise, do not sell many more than 100 ores, as they will slowly decrease.