In 1866 Alfred Nobel invented a new form of explosive called dynamite. Although dynamite has many military applications, especially in demolitions,  it has many non-military uses as well.

Using dynamite to blast a path, Engineers may build rail through mountain terrain. Foresters can reach previously inaccessible Timber and improve Timber production to Level III, producing four units per turn.  Finally, dynamite allows miners to improve all mines to Level III: Coal and Iron to six units per turn; Gold and Gems to three units per turn.