Technologies

Placer Mines

Placer Mines is an Exploration Age Market upgrade that increases Villager Coin gathering from mines and Mountain Monasteries by 10%. Its building access varies by civilization.

APPLIES TO Original game (2005); also in Definitive Edition
Placer Mines in Age of Empires III
Placer Mines
TECHNOLOGY DETAILS

Research profile

Civilization
Africans; Europeans; Federal Americans; Aztecs; Inca
Research location
Market (Europeans, Federal Americans, Aztecs, and Inca) ; Livestock Market (Africans)
Research time
30 seconds
Food cost
75
Wood cost
75
Effect
Villager gather work rate for mine and Mountain Monastery +10%
Next technology
Amalgamation (Europeans and Africans)

Effect

Only workers gathering Coin from the listed deposits receive the faster rate. The technology does not increase the deposit’s total contents or affect other Coin sources, so its value depends on how many workers remain on mines or Mountain Monasteries.

Research condition

Available in the Exploration Age at Market (Europeans, Federal Americans, Aztecs, and Inca), Livestock Market (Africans). Cost: 75 food, 75 wood. Civilization access varies by roster.

Research decision

Research before a sustained period of mining, especially when several Villagers depend on those sites for unit production or an age advance. Consider the time remaining on nearby deposits before delaying a more immediate purchase.

Market access, African access and the next upgrade

Placer Mines is an Exploration Age technology costing 75 Food and 75 Wood, with a 30-second research time. Europeans, Federal Americans, Aztecs and Inca research it at the Market; African civilizations use the Livestock Market. It increases Villager gathering from Mines and Mountain Monasteries by 10%. Amalgamation is a later step for Europeans and Africans, so the technology can be part of a longer Coin upgrade path for those groups.

Use it while mine workers remain assigned

This upgrade improves the rate at which workers collect Coin; it does not add Coin to a deposit or change the speed of other sources. Its value depends on having active workers and enough remaining mine supply. Research it before a sustained mining phase, particularly when Coin will fund the army or the next Age. If workers are about to leave the mines, direct the resources toward an immediate unit or another upgrade instead.