Planned Extraction is a campaign-exclusive technology in Age of Empires IV that can be researched at the Mining Camp in the Castle Age. It is available in The Normans, The Hundred Years War, and The Rise of Moscow. Because the Mongols cannot mine stone, it is not available in The Mongol Empire. It improves the stone mining speed of villagers by 15%. In all other game modes, this technology was combined with Shaft Mining, which improves both gold and stone mining speed.