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Measurement Of Different strata

In the mining, excavation requires a separate volume of different strata, like as soil, stone, coal, band.
For this purpose first, measure or take a reduced level of original ground levels before the mining operation start.
The mining operation is running Cary the survey work before drilling and blasting.
After drilling, blasting and material removed from the face. Then exposed coal top face carry the survey and leveling work on coal top face.
After removing the coal then complete the survey and leveling work of the coal floor.
First, calculate the total excavation volume.
Total excavation= R.L OF OGL- RL OF Coal floor
The volume of soil     = R.L of ogl- stone top.
The volume of stone = R.L of stone top- R.L of coal top.
The volume of coal = R.L of coal top - R.L of coal floor.
If the band included up to 1mt in coal seam deduct the % of volume in coal

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