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Iron and lumber are quite high. The tunnel network created by the many miners who have been working has now become rather vast. The remaining warehouses are now nearly filled to the brim with these supplies and smiths and carpenters have been purchasing them for the building of their own homes or the crafting of further tools. The major stone furnaces are also kept hot nearly 24/7 now, as basic labourers and master craftsmen alike smelt metals in an attempt to achieve better results (metallurgy research).
Copper and tin are now being mined because of the excess discovered in the tunnels, thus already leading to bronze alloys. Shafts are being erected to help maintain tunnel integrity and carts are being brought in to help ship the influx of minerals. Some rare metals as well as very bland metals (salt, sulfur, sand stuff, etc.) have been discovered as well, though Philius, in one of his rare spouts of common sense, is wondering what the rarer ones could possibly be used for if not in industry, so they have been stashed away, possibly to be traded with outsiders (speculation purposes).
Private and public speculators as well as merchants (some of which are retiring officers and thus wealthier; new officers are promoted in wake of retirees) are now diving upon the land, opening up a sort of real estate business. Though law states that they have Hammer citizenship and so buying land still qualifies as it being a part of the state of Hammer and thus available for expropriation at any time.
Machinery research (mechanical, combines wood with metal) is now being made, though it is in its birth.
Engineering is also making its own forays into siege engines, studying the effects of mass distribution, and push and pull forces in conjunction with different aids.
Brave centaur surveyers continue to venture further out into the land, always recording information and attempting to discern whether or not potential potential budding civilizations would liken to establishing trade relations. They have kindly conversed with inhabitants, not so much as hinting the presence of Hammer back west.
Finally, a new privatized mine, is being dug to the western shorelines (private merchants under Hammer have joined together to form Vein Harvest & Speculators Co.), with the aid of slaves that have been apprehended by mercenaries hired by the merchants. The mercenaries number in a few hundred, and include some minotaurs, some Naga, as well as most being hardy orcs (none of which ever served Hammer; for Hammer, it's treason to be a private soldier and recently soldiers are now swearing a vow that they must serve the state in a peerless manner). This enterprise will likely soon become legalized as public, at which point Hammer will be more careful with what they do.