: Efficient chains require short distances between the production site and the

: Late-game goods like Jewelry require deep mines for a steady supply of gold and gems.

The golden rule of Anno 1701 is simple: check the production time. If a building produces 1 ton of goods every 15 seconds (like an Ore Mine) and the next building in the chain takes 30 seconds to process 1 ton (like a Smelter), you can support two Smelters with just one Mine.