A technology to discover new methods of gold mining. Hydraulic placer mining techniques such as sluicing, cradling and dredging; and hard-rock mining are researched to replace the simple but labor intensive panning method. These *new techniques reduce the need for a large workforce and increase productivity.
Each level reduces the manpower required by 4%, increases production by 1% and reduces cost by 0.5%.
*Some of these techniques are not really new but learnt in the Academy from studying the ancient romans.