Level 1
100% more Coal blocks. 12% of Coal blocks are explosive.
Level 2
125% more Coal blocks. 14% of Coal blocks are explosive.
Level 3
150% more Coal blocks. 16% of Coal blocks are explosive.
Level 4
175% more Coal blocks. 18% of Coal blocks are explosive.
Level 5
200% more Coal blocks. 20% of Coal blocks are explosive.