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Age of Empires Series Wiki
Age of Empires Series Wiki

Villagers gather Coin from Estates faster.
—In-game description

Refineries is a technology in Age of Empires III that can be researched by European civilizations and the United States at the Estate, and Mexicans at the Hacienda once the Industrial Age is reached and Homesteading is researched. Once researched, it allows villagers to gather coin from Estates, Rice Paddies, Fields, and Haciendas 30% faster.

Although Refineries is the most expensive technology in the Estate and Hacienda, costing 600 food, 600 wood, it benefits the civilization's economy in the long run.

Estate technologies in Age of Empires III
Europeans Bookkeeping · Homesteading · Refineries
Native Americans Earth Ceremony · Earth Gift Ceremony · Excessive Tribute · Tezcatlipoca Worship (· Maple Festival (· Gun Trade (· Coca Cultivation ()