- After spring plowing it looks oil-blackened or colored by the soft coal which occurs in great veins throughout the state.
- We also supply blind coal and soft coal from china and indonesia.
- There are many kinds of forms of gas discharge but the main form is soft coal seam gas discharge.
- The paper introduces some mining measures in soft coal seam of linnanchang mine and soft floor by leaving top coal.the measurements ensure safety mining.
- At this moment the stove became very glowing because soft coal's smoking went away firepower was very strong.