Mining camp

The Mining Camp is an early-settlement gathering building that enables harvesting for a variety of Ore tiles, such as Copper Ore or Iron Ore. While any kind of Ore tile can be mined with a Level 1 Mining Camp, most do not become useful until the accompanying processing knowledges (like Bronze Working) are unlocked at the Foundry and Tool Maker.

Due to the vital role of metals in advancing to new eras, it's common for players to explore their region extensively in search of the best deposits to claim with a City or Outpost. Territories can spawn with up to 4 types of Ore or Quarry tiles, but it's more typical to find 1 - 2 Ores or none at all. Deposits of Tin, Silver, and Gold are considered especially hard to find and often only appear in small quantities.

Buildings

Appearance	Building Level	Unlocked By	Build Cost	Base Efficiency	Tile Radius	Workers	Profession
	1	Metallurgy	3 Hammers 1 Wood 1 Leather 2 Stone	1.0	4	4	Miner
	2	?	?	?	?	?	?
	3	?	?	?	?	?	?
	4	?	?	?	?	?	?

Gathering

Resource	Building Level	Need per Unit Gathered
		Workforce	Ore
Coal	1	1.5	2 tiles
Copper	1	5.0	6 tiles
Tin	1	6.0	6 tiles
Iron	1	6.0	10 tiles
Silver	1	10.0	13.3 tiles
Gold	1	15.0	20 tiles

Rarity

The following appearance rates are based on player estimates from carefully exploring standard multiplayer maps. Up to 4 Ore deposits can appear in any territory, including multiples of the same type.

Ore Deposit	Territory Appearance
	Chance	Tier
Copper	20%	Common
Iron	20%
Coal	15%	Uncommon
Limestone*	15%
Tin	5%	Rare
Silver	5%
Gold	2%	Very Rare
Obsidian	2%
Ash	2%

* Excluding Mediterranean climates, where Limestone can appear as terrain feature instead of Ore tiles.