Mark these specific cities with the following symbols (triangles for mining, circles for processing):
Mining of apatite ( Kirovsk ) and production of fertilizers.
Use different colors for different types of chemistry (e.g., green for fertilizers, red for petrochemistry).
Mark these specific cities with the following symbols (triangles for mining, circles for processing):
Mining of apatite ( Kirovsk ) and production of fertilizers.
Use different colors for different types of chemistry (e.g., green for fertilizers, red for petrochemistry).