A gravel factory where you can crush your stones into crushed stone (mixed gravel). The crushed stone/mixed gravel can then be sorted into gravel (coarse), fine gravel and sand. Further processing of coarse gravel gives fine gravel, and fine gravel can be ground into sand. Gravel Factory Input: Stone Output: Crushed Stone, Gravel, Fine Gravel and Sand Price: $25000 Gravel and Sand Sellpoint Input: Crushed Stone, Gravel, Fine Gravel and Sand Price: $100